taskdialog.c 54.6 KB
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/*
 * Task dialog control
 *
 * Copyright 2017 Fabian Maurer
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 * Copyright 2018 Zhiyi Zhang
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 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
 *
 */

#include <stdarg.h>
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#include <stdlib.h>
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#include <string.h>

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#define NONAMELESSUNION

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#include "windef.h"
#include "winbase.h"
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#include "wingdi.h"
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#include "winuser.h"
#include "commctrl.h"
#include "winerror.h"
#include "comctl32.h"
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#include "wine/debug.h"
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#include "wine/unicode.h"
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WINE_DEFAULT_DEBUG_CHANNEL(taskdialog);

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static const UINT DIALOG_MIN_WIDTH = 240;
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static const UINT DIALOG_SPACING = 5;
static const UINT DIALOG_BUTTON_WIDTH = 50;
static const UINT DIALOG_BUTTON_HEIGHT = 14;
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static const UINT DIALOG_EXPANDO_ICON_WIDTH = 10;
static const UINT DIALOG_EXPANDO_ICON_HEIGHT = 10;
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static const UINT DIALOG_TIMER_MS = 200;
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static const UINT ID_TIMER = 1;

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struct taskdialog_info
{
    HWND hwnd;
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    const TASKDIALOGCONFIG *taskconfig;
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    DWORD last_timer_tick;
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    HFONT font;
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    HFONT main_instruction_font;
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    /* Control handles */
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    HWND main_icon;
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    HWND main_instruction;
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    HWND content;
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    HWND progress_bar;
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    HWND *radio_buttons;
    INT radio_button_count;
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    HWND *command_links;
    INT command_link_count;
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    HWND expanded_info;
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    HWND expando_button;
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    HWND verification_box;
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    HWND footer_icon;
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    HWND footer_text;
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    HWND *buttons;
    INT button_count;
    HWND default_button;
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    /* Dialog metrics */
    struct
    {
        LONG x_baseunit;
        LONG y_baseunit;
        LONG h_spacing;
        LONG v_spacing;
    } m;
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    INT selected_radio_id;
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    BOOL verification_checked;
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    BOOL expanded;
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    BOOL has_cancel;
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    WCHAR *expanded_text;
    WCHAR *collapsed_text;
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};

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struct button_layout_info
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{
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    LONG width;
    LONG line;
};
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static HRESULT taskdialog_notify(struct taskdialog_info *dialog_info, UINT notification, WPARAM wparam, LPARAM lparam);
static void taskdialog_on_button_click(struct taskdialog_info *dialog_info, HWND hwnd, WORD id);
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static void taskdialog_layout(struct taskdialog_info *dialog_info);
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static void taskdialog_du_to_px(struct taskdialog_info *dialog_info, LONG *width, LONG *height)
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{
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    if (width) *width = MulDiv(*width, dialog_info->m.x_baseunit, 4);
    if (height) *height = MulDiv(*height, dialog_info->m.y_baseunit, 8);
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}

static void template_write_data(char **ptr, const void *src, unsigned int size)
{
    memcpy(*ptr, src, size);
    *ptr += size;
}

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static unsigned int taskdialog_get_reference_rect(const TASKDIALOGCONFIG *taskconfig, RECT *ret)
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{
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    HMONITOR monitor = MonitorFromWindow(taskconfig->hwndParent ? taskconfig->hwndParent : GetActiveWindow(),
                                         MONITOR_DEFAULTTOPRIMARY);
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    MONITORINFO info;

    info.cbSize = sizeof(info);
    GetMonitorInfoW(monitor, &info);

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    if ((taskconfig->dwFlags & TDF_POSITION_RELATIVE_TO_WINDOW) && taskconfig->hwndParent)
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        GetWindowRect(taskconfig->hwndParent, ret);
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    else
        *ret = info.rcWork;

    return info.rcWork.right - info.rcWork.left;
}

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static WCHAR *taskdialog_get_exe_name(WCHAR *name, DWORD length)
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{
    DWORD len = GetModuleFileNameW(NULL, name, length);
    if (len && len < length)
    {
        WCHAR *p;
        if ((p = strrchrW(name, '/'))) name = p + 1;
        if ((p = strrchrW(name, '\\'))) name = p + 1;
        return name;
    }
    else
        return NULL;
}

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static DLGTEMPLATE *create_taskdialog_template(const TASKDIALOGCONFIG *taskconfig)
{
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    unsigned int size, title_size;
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    static const WORD fontsize = 0x7fff;
    static const WCHAR emptyW[] = { 0 };
    const WCHAR *titleW = NULL;
    DLGTEMPLATE *template;
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    WCHAR pathW[MAX_PATH];
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    char *ptr;

    /* Window title */
    if (!taskconfig->pszWindowTitle)
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        titleW = taskdialog_get_exe_name(pathW, ARRAY_SIZE(pathW));
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    else if (IS_INTRESOURCE(taskconfig->pszWindowTitle))
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    {
        if (!LoadStringW(taskconfig->hInstance, LOWORD(taskconfig->pszWindowTitle), (WCHAR *)&titleW, 0))
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            titleW = taskdialog_get_exe_name(pathW, ARRAY_SIZE(pathW));
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    }
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    else
        titleW = taskconfig->pszWindowTitle;
    if (!titleW)
        titleW = emptyW;
    title_size = (strlenW(titleW) + 1) * sizeof(WCHAR);

    size = sizeof(DLGTEMPLATE) + 2 * sizeof(WORD);
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    size += title_size;
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    size += 2; /* font size */

    template = Alloc(size);
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    if (!template) return NULL;
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    template->style = DS_MODALFRAME | DS_SETFONT | WS_CAPTION | WS_VISIBLE | WS_SYSMENU;
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    if (taskconfig->dwFlags & TDF_CAN_BE_MINIMIZED) template->style |= WS_MINIMIZEBOX;
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    if (!(taskconfig->dwFlags & TDF_NO_SET_FOREGROUND)) template->style |= DS_SETFOREGROUND;
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    if (taskconfig->dwFlags & TDF_RTL_LAYOUT) template->dwExtendedStyle = WS_EX_LAYOUTRTL | WS_EX_RIGHT | WS_EX_RTLREADING;
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    ptr = (char *)(template + 1);
    ptr += 2; /* menu */
    ptr += 2; /* class */
    template_write_data(&ptr, titleW, title_size);
    template_write_data(&ptr, &fontsize, sizeof(fontsize));

    return template;
}

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static HWND taskdialog_find_button(HWND *buttons, INT count, INT id)
{
    INT button_id;
    INT i;

    for (i = 0; i < count; i++)
    {
        button_id = GetWindowLongW(buttons[i], GWLP_ID);
        if (button_id == id) return buttons[i];
    }

    return NULL;
}

static void taskdialog_enable_button(const struct taskdialog_info *dialog_info, INT id, BOOL enable)
{
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    HWND hwnd = taskdialog_find_button(dialog_info->command_links, dialog_info->command_link_count, id);
    if (!hwnd) hwnd = taskdialog_find_button(dialog_info->buttons, dialog_info->button_count, id);
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    if (hwnd) EnableWindow(hwnd, enable);
}

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static void taskdialog_click_button(struct taskdialog_info *dialog_info, INT id)
{
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    if (taskdialog_notify(dialog_info, TDN_BUTTON_CLICKED, id, 0) == S_OK) EndDialog(dialog_info->hwnd, id);
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}

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static void taskdialog_button_set_shield(const struct taskdialog_info *dialog_info, INT id, BOOL elevate)
{
    HWND hwnd = taskdialog_find_button(dialog_info->command_links, dialog_info->command_link_count, id);
    if (!hwnd) hwnd = taskdialog_find_button(dialog_info->buttons, dialog_info->button_count, id);
    if (hwnd) SendMessageW(hwnd, BCM_SETSHIELD, 0, elevate);
}

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static void taskdialog_enable_radio_button(const struct taskdialog_info *dialog_info, INT id, BOOL enable)
{
    HWND hwnd = taskdialog_find_button(dialog_info->radio_buttons, dialog_info->radio_button_count, id);
    if (hwnd) EnableWindow(hwnd, enable);
}

static void taskdialog_click_radio_button(const struct taskdialog_info *dialog_info, INT id)
{
    HWND hwnd = taskdialog_find_button(dialog_info->radio_buttons, dialog_info->radio_button_count, id);
    if (hwnd) SendMessageW(hwnd, BM_CLICK, 0, 0);
}

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static HRESULT taskdialog_notify(struct taskdialog_info *dialog_info, UINT notification, WPARAM wparam, LPARAM lparam)
{
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    const TASKDIALOGCONFIG *taskconfig = dialog_info->taskconfig;
    return taskconfig->pfCallback
               ? taskconfig->pfCallback(dialog_info->hwnd, notification, wparam, lparam, taskconfig->lpCallbackData)
               : S_OK;
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}

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static void taskdialog_move_controls_vertically(HWND parent, HWND *controls, INT count, INT offset)
{
    RECT rect;
    POINT pt;
    INT i;

    for (i = 0; i < count; i++)
    {
        if (!controls[i]) continue;

        GetWindowRect(controls[i], &rect);
        pt.x = rect.left;
        pt.y = rect.top;
        MapWindowPoints(HWND_DESKTOP, parent, &pt, 1);
        SetWindowPos(controls[i], 0, pt.x, pt.y + offset, 0, 0, SWP_NOSIZE | SWP_NOZORDER);
    }
}

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static void taskdialog_toggle_expando_control(struct taskdialog_info *dialog_info)
{
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    const TASKDIALOGCONFIG *taskconfig = dialog_info->taskconfig;
    const WCHAR *text;
    RECT info_rect, rect;
    INT height, offset;

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    dialog_info->expanded = !dialog_info->expanded;
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    text = dialog_info->expanded ? dialog_info->expanded_text : dialog_info->collapsed_text;
    SendMessageW(dialog_info->expando_button, WM_SETTEXT, 0, (LPARAM)text);
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    ShowWindow(dialog_info->expanded_info, dialog_info->expanded ? SW_SHOWDEFAULT : SW_HIDE);
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    GetWindowRect(dialog_info->expanded_info, &info_rect);
    /* If expanded information starts up not expanded, call taskdialog_layout()
     * to to set size for expanded information control at least once */
    if (IsRectEmpty(&info_rect))
    {
        taskdialog_layout(dialog_info);
        return;
    }
    height = info_rect.bottom - info_rect.top + dialog_info->m.v_spacing;
    offset = dialog_info->expanded ? height : -height;

    /* Update vertical layout, move all controls after expanded information */
    /* Move dialog */
    GetWindowRect(dialog_info->hwnd, &rect);
    SetWindowPos(dialog_info->hwnd, 0, 0, 0, rect.right - rect.left, rect.bottom - rect.top + offset,
                 SWP_NOMOVE | SWP_NOZORDER);
    /* Move controls */
    if (!(taskconfig->dwFlags & TDF_EXPAND_FOOTER_AREA))
    {
        taskdialog_move_controls_vertically(dialog_info->hwnd, &dialog_info->progress_bar, 1, offset);
        taskdialog_move_controls_vertically(dialog_info->hwnd, &dialog_info->expando_button, 1, offset);
        taskdialog_move_controls_vertically(dialog_info->hwnd, &dialog_info->verification_box, 1, offset);
        taskdialog_move_controls_vertically(dialog_info->hwnd, &dialog_info->footer_icon, 1, offset);
        taskdialog_move_controls_vertically(dialog_info->hwnd, &dialog_info->footer_text, 1, offset);
        taskdialog_move_controls_vertically(dialog_info->hwnd, dialog_info->buttons, dialog_info->button_count, offset);
        taskdialog_move_controls_vertically(dialog_info->hwnd, dialog_info->radio_buttons,
                                            dialog_info->radio_button_count, offset);
        taskdialog_move_controls_vertically(dialog_info->hwnd, dialog_info->command_links,
                                            dialog_info->command_link_count, offset);
    }
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}

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static void taskdialog_on_button_click(struct taskdialog_info *dialog_info, HWND hwnd, WORD id)
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{
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    INT command_id;
    HWND button, radio_button;

    /* Prefer the id from hwnd because the id from WM_COMMAND is truncated to WORD */
    command_id = hwnd ? GetWindowLongW(hwnd, GWLP_ID) : id;
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    if (hwnd && hwnd == dialog_info->expando_button)
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    {
        taskdialog_toggle_expando_control(dialog_info);
        taskdialog_notify(dialog_info, TDN_EXPANDO_BUTTON_CLICKED, dialog_info->expanded, 0);
        return;
    }

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    if (hwnd && hwnd == dialog_info->verification_box)
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    {
        dialog_info->verification_checked = !dialog_info->verification_checked;
        taskdialog_notify(dialog_info, TDN_VERIFICATION_CLICKED, dialog_info->verification_checked, 0);
        return;
    }

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    radio_button = taskdialog_find_button(dialog_info->radio_buttons, dialog_info->radio_button_count, command_id);
    if (radio_button)
    {
        dialog_info->selected_radio_id = command_id;
        taskdialog_notify(dialog_info, TDN_RADIO_BUTTON_CLICKED, command_id, 0);
        return;
    }

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    button = taskdialog_find_button(dialog_info->command_links, dialog_info->command_link_count, command_id);
    if (!button) button = taskdialog_find_button(dialog_info->buttons, dialog_info->button_count, command_id);
    if (!button && command_id == IDOK)
    {
        button = dialog_info->command_link_count > 0 ? dialog_info->command_links[0] : dialog_info->buttons[0];
        command_id = GetWindowLongW(button, GWLP_ID);
    }

    if (button && taskdialog_notify(dialog_info, TDN_BUTTON_CLICKED, command_id, 0) == S_OK)
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        EndDialog(dialog_info->hwnd, command_id);
}

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static WCHAR *taskdialog_gettext(struct taskdialog_info *dialog_info, BOOL user_resource, const WCHAR *text)
{
    const WCHAR *textW = NULL;
    INT length;
    WCHAR *ret;

    if (IS_INTRESOURCE(text))
    {
        if (!(length = LoadStringW(user_resource ? dialog_info->taskconfig->hInstance : COMCTL32_hModule,
                                   (UINT_PTR)text, (WCHAR *)&textW, 0)))
            return NULL;
    }
    else
    {
        textW = text;
        length = strlenW(textW);
    }

    ret = Alloc((length + 1) * sizeof(WCHAR));
    if (ret) memcpy(ret, textW, length * sizeof(WCHAR));

    return ret;
}

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static BOOL taskdialog_hyperlink_enabled(struct taskdialog_info *dialog_info)
{
    return dialog_info->taskconfig->dwFlags & TDF_ENABLE_HYPERLINKS;
}

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static BOOL taskdialog_use_command_link(struct taskdialog_info *dialog_info)
{
    return dialog_info->taskconfig->dwFlags & (TDF_USE_COMMAND_LINKS | TDF_USE_COMMAND_LINKS_NO_ICON);
}

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static void taskdialog_get_label_size(struct taskdialog_info *dialog_info, HWND hwnd, LONG max_width, SIZE *size,
                                      BOOL syslink)
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{
    DWORD style = DT_EXPANDTABS | DT_CALCRECT | DT_WORDBREAK;
    HFONT hfont, old_hfont;
    HDC hdc;
    RECT rect = {0};
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    WCHAR *text;
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    INT text_length;

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    if (syslink)
    {
        SendMessageW(hwnd, LM_GETIDEALSIZE, max_width, (LPARAM)size);
        return;
    }

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    if (dialog_info->taskconfig->dwFlags & TDF_RTL_LAYOUT)
        style |= DT_RIGHT | DT_RTLREADING;
    else
        style |= DT_LEFT;

    hfont = (HFONT)SendMessageW(hwnd, WM_GETFONT, 0, 0);
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    text_length = GetWindowTextLengthW(hwnd);
    text = Alloc((text_length + 1) * sizeof(WCHAR));
    if (!text)
    {
        size->cx = 0;
        size->cy = 0;
        return;
    }
    GetWindowTextW(hwnd, text, text_length + 1);
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    hdc = GetDC(hwnd);
    old_hfont = SelectObject(hdc, hfont);
    rect.right = max_width;
    size->cy = DrawTextW(hdc, text, text_length, &rect, style);
    size->cx = min(max_width, rect.right - rect.left);
    if (old_hfont) SelectObject(hdc, old_hfont);
    ReleaseDC(hwnd, hdc);
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    Free(text);
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}

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static void taskdialog_get_radio_button_size(struct taskdialog_info *dialog_info, HWND hwnd, LONG max_width, SIZE *size)
{
    DWORD style = DT_EXPANDTABS | DT_CALCRECT | DT_WORDBREAK;
    HFONT hfont, old_hfont;
    HDC hdc;
    RECT rect = {0};
    INT text_length;
    WCHAR *text;
    INT text_offset, radio_box_width, radio_box_height;

    hdc = GetDC(hwnd);
    hfont = (HFONT)SendMessageW(hwnd, WM_GETFONT, 0, 0);
    old_hfont = SelectObject(hdc, hfont);

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    radio_box_width = 12 * GetDpiForWindow(hwnd) / 96 + 1;
    radio_box_height = 12 * GetDpiForWindow(hwnd) / 96 + 1;
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    GetCharWidthW(hdc, '0', '0', &text_offset);
    text_offset /= 2;

    if (dialog_info->taskconfig->dwFlags & TDF_RTL_LAYOUT)
        style |= DT_RIGHT | DT_RTLREADING;
    else
        style |= DT_LEFT;

    rect.right = max_width - radio_box_width - text_offset;
    text_length = GetWindowTextLengthW(hwnd);
    text = Alloc((text_length + 1) * sizeof(WCHAR));
    if (!text)
    {
        size->cx = 0;
        size->cy = 0;
        return;
    }
    GetWindowTextW(hwnd, text, text_length + 1);
    size->cy = DrawTextW(hdc, text, text_length, &rect, style);
    size->cx = min(max_width - radio_box_width - text_offset, rect.right - rect.left);
    size->cx += radio_box_width + text_offset;
    size->cy = max(size->cy, radio_box_height);
    if (old_hfont) SelectObject(hdc, old_hfont);
    Free(text);
    ReleaseDC(hwnd, hdc);
}

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static void taskdialog_get_expando_size(struct taskdialog_info *dialog_info, HWND hwnd, SIZE *size)
{
    DWORD style = DT_EXPANDTABS | DT_CALCRECT | DT_WORDBREAK;
    HFONT hfont, old_hfont;
    HDC hdc;
    RECT rect = {0};
    LONG icon_width, icon_height, text_offset;
    LONG max_width, max_text_height;

    hdc = GetDC(hwnd);
    hfont = (HFONT)SendMessageW(hwnd, WM_GETFONT, 0, 0);
    old_hfont = SelectObject(hdc, hfont);

    icon_width = DIALOG_EXPANDO_ICON_WIDTH;
    icon_height = DIALOG_EXPANDO_ICON_HEIGHT;
    taskdialog_du_to_px(dialog_info, &icon_width, &icon_height);

    GetCharWidthW(hdc, '0', '0', &text_offset);
    text_offset /= 2;

    if (dialog_info->taskconfig->dwFlags & TDF_RTL_LAYOUT)
        style |= DT_RIGHT | DT_RTLREADING;
    else
        style |= DT_LEFT;

    max_width = DIALOG_MIN_WIDTH / 2;
    taskdialog_du_to_px(dialog_info, &max_width, NULL);

    rect.right = max_width - icon_width - text_offset;
    max_text_height = DrawTextW(hdc, dialog_info->expanded_text, -1, &rect, style);
    size->cy = max(max_text_height, icon_height);
    size->cx = rect.right - rect.left;

    rect.right = max_width - icon_width - text_offset;
    max_text_height = DrawTextW(hdc, dialog_info->collapsed_text, -1, &rect, style);
    size->cy = max(size->cy, max_text_height);
    size->cx = max(size->cx, rect.right - rect.left);
    size->cx = min(size->cx, max_width);

    if (old_hfont) SelectObject(hdc, old_hfont);
    ReleaseDC(hwnd, hdc);
}

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static ULONG_PTR taskdialog_get_standard_icon(LPCWSTR icon)
{
    if (icon == TD_WARNING_ICON)
        return IDI_WARNING;
    else if (icon == TD_ERROR_ICON)
        return IDI_ERROR;
    else if (icon == TD_INFORMATION_ICON)
        return IDI_INFORMATION;
    else if (icon == TD_SHIELD_ICON)
        return IDI_SHIELD;
    else
        return (ULONG_PTR)icon;
}

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static void taskdialog_set_icon(struct taskdialog_info *dialog_info, INT element, HICON icon)
{
    DWORD flags = dialog_info->taskconfig->dwFlags;
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    INT cx = 0, cy = 0;
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    HICON hicon;

    if (!icon) return;

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    if (((flags & TDF_USE_HICON_MAIN) && element == TDIE_ICON_MAIN)
        || ((flags & TDF_USE_HICON_FOOTER) && element == TDIE_ICON_FOOTER))
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        hicon = icon;
    else
    {
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        if (element == TDIE_ICON_FOOTER)
        {
            cx = GetSystemMetrics(SM_CXSMICON);
            cy = GetSystemMetrics(SM_CYSMICON);
        }
        hicon = LoadImageW(dialog_info->taskconfig->hInstance, (LPCWSTR)icon, IMAGE_ICON, cx, cy, LR_SHARED | LR_DEFAULTSIZE);
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        if (!hicon)
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            hicon = LoadImageW(NULL, (LPCWSTR)taskdialog_get_standard_icon((LPCWSTR)icon), IMAGE_ICON, cx, cy,
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                               LR_SHARED | LR_DEFAULTSIZE);
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    }

    if (!hicon) return;

    if (element == TDIE_ICON_MAIN)
    {
        SendMessageW(dialog_info->hwnd, WM_SETICON, (WPARAM)ICON_BIG, (LPARAM)hicon);
        SendMessageW(dialog_info->main_icon, STM_SETICON, (WPARAM)hicon, 0);
    }
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    else if (element == TDIE_ICON_FOOTER)
        SendMessageW(dialog_info->footer_icon, STM_SETICON, (WPARAM)hicon, 0);
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}

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static void taskdialog_set_element_text(struct taskdialog_info *dialog_info, TASKDIALOG_ELEMENTS element,
                                        const WCHAR *text)
{
    HWND hwnd = NULL;
    WCHAR *textW;

    if (element == TDE_CONTENT)
        hwnd = dialog_info->content;
    else if (element == TDE_EXPANDED_INFORMATION)
        hwnd = dialog_info->expanded_info;
    else if (element == TDE_FOOTER)
        hwnd = dialog_info->footer_text;
    else if (element == TDE_MAIN_INSTRUCTION)
        hwnd = dialog_info->main_instruction;

    if (!hwnd) return;

    textW = taskdialog_gettext(dialog_info, TRUE, text);
    SendMessageW(hwnd, WM_SETTEXT, 0, (LPARAM)textW);
    Free(textW);
}

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static void taskdialog_check_default_radio_buttons(struct taskdialog_info *dialog_info)
{
    const TASKDIALOGCONFIG *taskconfig = dialog_info->taskconfig;
    HWND default_button;

    if (!dialog_info->radio_button_count) return;

    default_button = taskdialog_find_button(dialog_info->radio_buttons, dialog_info->radio_button_count,
                                            taskconfig->nDefaultRadioButton);

    if (!default_button && !(taskconfig->dwFlags & TDF_NO_DEFAULT_RADIO_BUTTON))
        default_button = dialog_info->radio_buttons[0];

    if (default_button)
    {
        SendMessageW(default_button, BM_SETCHECK, BST_CHECKED, 0);
595
        taskdialog_on_button_click(dialog_info, default_button, 0);
596 597 598
    }
}

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static void taskdialog_add_main_icon(struct taskdialog_info *dialog_info)
{
    if (!dialog_info->taskconfig->u.hMainIcon) return;

    dialog_info->main_icon =
        CreateWindowW(WC_STATICW, NULL, WS_CHILD | WS_VISIBLE | SS_ICON, 0, 0, 0, 0, dialog_info->hwnd, NULL, 0, NULL);
    taskdialog_set_icon(dialog_info, TDIE_ICON_MAIN, dialog_info->taskconfig->u.hMainIcon);
}

608
static HWND taskdialog_create_label(struct taskdialog_info *dialog_info, const WCHAR *text, HFONT font, BOOL syslink)
609 610 611
{
    WCHAR *textW;
    HWND hwnd;
612 613
    const WCHAR *class;
    DWORD style = WS_CHILD | WS_VISIBLE;
614 615 616

    if (!text) return NULL;

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    class = syslink ? WC_LINK : WC_STATICW;
    if (syslink) style |= WS_TABSTOP;
619
    textW = taskdialog_gettext(dialog_info, TRUE, text);
620
    hwnd = CreateWindowW(class, textW, style, 0, 0, 0, 0, dialog_info->hwnd, NULL, 0, NULL);
621
    Free(textW);
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    SendMessageW(hwnd, WM_SETFONT, (WPARAM)font, 0);
    return hwnd;
}

static void taskdialog_add_main_instruction(struct taskdialog_info *dialog_info)
{
    const TASKDIALOGCONFIG *taskconfig = dialog_info->taskconfig;
    NONCLIENTMETRICSW ncm;

    if (!taskconfig->pszMainInstruction) return;

    ncm.cbSize = sizeof(ncm);
    SystemParametersInfoW(SPI_GETNONCLIENTMETRICS, ncm.cbSize, &ncm, 0);
    /* 1.25 times the height */
    ncm.lfMessageFont.lfHeight = ncm.lfMessageFont.lfHeight * 5 / 4;
    ncm.lfMessageFont.lfWeight = FW_BOLD;
    dialog_info->main_instruction_font = CreateFontIndirectW(&ncm.lfMessageFont);

    dialog_info->main_instruction =
642
        taskdialog_create_label(dialog_info, taskconfig->pszMainInstruction, dialog_info->main_instruction_font, FALSE);
643 644
}

645 646
static void taskdialog_add_content(struct taskdialog_info *dialog_info)
{
647 648
    dialog_info->content = taskdialog_create_label(dialog_info, dialog_info->taskconfig->pszContent, dialog_info->font,
                                                   taskdialog_hyperlink_enabled(dialog_info));
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}

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static void taskdialog_add_progress_bar(struct taskdialog_info *dialog_info)
{
    const TASKDIALOGCONFIG *taskconfig = dialog_info->taskconfig;
    DWORD style = PBS_SMOOTH | PBS_SMOOTHREVERSE | WS_CHILD | WS_VISIBLE;

    if (!(taskconfig->dwFlags & (TDF_SHOW_PROGRESS_BAR | TDF_SHOW_MARQUEE_PROGRESS_BAR))) return;
    if (taskconfig->dwFlags & TDF_SHOW_MARQUEE_PROGRESS_BAR) style |= PBS_MARQUEE;
    dialog_info->progress_bar =
        CreateWindowW(PROGRESS_CLASSW, NULL, style, 0, 0, 0, 0, dialog_info->hwnd, NULL, 0, NULL);
}

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static void taskdialog_add_radio_buttons(struct taskdialog_info *dialog_info)
{
    const TASKDIALOGCONFIG *taskconfig = dialog_info->taskconfig;
    static const DWORD style = BS_AUTORADIOBUTTON | BS_MULTILINE | BS_TOP | WS_CHILD | WS_VISIBLE | WS_TABSTOP;
    WCHAR *textW;
    INT i;

    if (!taskconfig->cRadioButtons || !taskconfig->pRadioButtons) return;

    dialog_info->radio_buttons = Alloc(taskconfig->cRadioButtons * sizeof(*dialog_info->radio_buttons));
    if (!dialog_info->radio_buttons) return;

    dialog_info->radio_button_count = taskconfig->cRadioButtons;
    for (i = 0; i < dialog_info->radio_button_count; i++)
    {
        textW = taskdialog_gettext(dialog_info, TRUE, taskconfig->pRadioButtons[i].pszButtonText);
        dialog_info->radio_buttons[i] =
            CreateWindowW(WC_BUTTONW, textW, i == 0 ? style | WS_GROUP : style, 0, 0, 0, 0, dialog_info->hwnd,
680
                          LongToHandle(taskconfig->pRadioButtons[i].nButtonID), 0, NULL);
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        SendMessageW(dialog_info->radio_buttons[i], WM_SETFONT, (WPARAM)dialog_info->font, 0);
        Free(textW);
    }
}

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static void taskdialog_add_command_links(struct taskdialog_info *dialog_info)
{
    const TASKDIALOGCONFIG *taskconfig = dialog_info->taskconfig;
    DWORD default_style = BS_MULTILINE | BS_LEFT | BS_TOP | WS_CHILD | WS_VISIBLE | WS_TABSTOP, style;
    BOOL is_default;
    WCHAR *textW;
    INT i;

    if (!taskconfig->cButtons || !taskconfig->pButtons || !taskdialog_use_command_link(dialog_info)) return;

    dialog_info->command_links = Alloc(taskconfig->cButtons * sizeof(*dialog_info->command_links));
    if (!dialog_info->command_links) return;

    dialog_info->command_link_count = taskconfig->cButtons;
    for (i = 0; i < dialog_info->command_link_count; i++)
    {
        is_default = taskconfig->pButtons[i].nButtonID == taskconfig->nDefaultButton;
        style = is_default ? default_style | BS_DEFCOMMANDLINK : default_style | BS_COMMANDLINK;
        textW = taskdialog_gettext(dialog_info, TRUE, taskconfig->pButtons[i].pszButtonText);
        dialog_info->command_links[i] = CreateWindowW(WC_BUTTONW, textW, style, 0, 0, 0, 0, dialog_info->hwnd,
706
                                                      LongToHandle(taskconfig->pButtons[i].nButtonID), 0, NULL);
707 708 709 710 711 712 713
        SendMessageW(dialog_info->command_links[i], WM_SETFONT, (WPARAM)dialog_info->font, 0);
        Free(textW);

        if (is_default && !dialog_info->default_button) dialog_info->default_button = dialog_info->command_links[i];
    }
}

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static void taskdialog_add_expanded_info(struct taskdialog_info *dialog_info)
{
    const TASKDIALOGCONFIG *taskconfig = dialog_info->taskconfig;

    if (!taskconfig->pszExpandedInformation) return;

    dialog_info->expanded = taskconfig->dwFlags & TDF_EXPANDED_BY_DEFAULT;
    dialog_info->expanded_info = taskdialog_create_label(dialog_info, taskconfig->pszExpandedInformation,
                                                         dialog_info->font, taskdialog_hyperlink_enabled(dialog_info));
    ShowWindow(dialog_info->expanded_info, dialog_info->expanded ? SW_SHOWDEFAULT : SW_HIDE);
}

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static void taskdialog_add_expando_button(struct taskdialog_info *dialog_info)
{
    const TASKDIALOGCONFIG *taskconfig = dialog_info->taskconfig;
    const WCHAR *textW;

    if (!taskconfig->pszExpandedInformation) return;

    if (!taskconfig->pszCollapsedControlText && !taskconfig->pszExpandedControlText)
    {
        dialog_info->expanded_text = taskdialog_gettext(dialog_info, FALSE, MAKEINTRESOURCEW(IDS_TD_EXPANDED));
        dialog_info->collapsed_text = taskdialog_gettext(dialog_info, FALSE, MAKEINTRESOURCEW(IDS_TD_COLLAPSED));
    }
    else
    {
        textW = taskconfig->pszExpandedControlText ? taskconfig->pszExpandedControlText
                                                   : taskconfig->pszCollapsedControlText;
        dialog_info->expanded_text = taskdialog_gettext(dialog_info, TRUE, textW);
        textW = taskconfig->pszCollapsedControlText ? taskconfig->pszCollapsedControlText
                                                    : taskconfig->pszExpandedControlText;
        dialog_info->collapsed_text = taskdialog_gettext(dialog_info, TRUE, textW);
    }

    textW = dialog_info->expanded ? dialog_info->expanded_text : dialog_info->collapsed_text;

    dialog_info->expando_button = CreateWindowW(WC_BUTTONW, textW, WS_CHILD | WS_VISIBLE | WS_TABSTOP | BS_OWNERDRAW, 0,
                                                0, 0, 0, dialog_info->hwnd, 0, 0, 0);
    SendMessageW(dialog_info->expando_button, WM_SETFONT, (WPARAM)dialog_info->font, 0);
}

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static void taskdialog_add_verification_box(struct taskdialog_info *dialog_info)
{
    const TASKDIALOGCONFIG *taskconfig = dialog_info->taskconfig;
    static const DWORD style = BS_AUTOCHECKBOX | BS_MULTILINE | BS_LEFT | BS_TOP | WS_CHILD | WS_VISIBLE | WS_TABSTOP;
    WCHAR *textW;

    /* TDF_VERIFICATION_FLAG_CHECKED works even if pszVerificationText is not set */
    if (taskconfig->dwFlags & TDF_VERIFICATION_FLAG_CHECKED) dialog_info->verification_checked = TRUE;

    if (!taskconfig->pszVerificationText) return;

    textW = taskdialog_gettext(dialog_info, TRUE, taskconfig->pszVerificationText);
    dialog_info->verification_box = CreateWindowW(WC_BUTTONW, textW, style, 0, 0, 0, 0, dialog_info->hwnd, 0, 0, 0);
    SendMessageW(dialog_info->verification_box, WM_SETFONT, (WPARAM)dialog_info->font, 0);
    Free(textW);

    if (taskconfig->dwFlags & TDF_VERIFICATION_FLAG_CHECKED)
        SendMessageW(dialog_info->verification_box, BM_SETCHECK, BST_CHECKED, 0);
}

775
static void taskdialog_add_button(struct taskdialog_info *dialog_info, HWND *button, INT_PTR id, const WCHAR *text,
776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792
                                  BOOL custom_button)
{
    const TASKDIALOGCONFIG *taskconfig = dialog_info->taskconfig;
    WCHAR *textW;

    textW = taskdialog_gettext(dialog_info, custom_button, text);
    *button = CreateWindowW(WC_BUTTONW, textW, WS_CHILD | WS_VISIBLE | WS_TABSTOP, 0, 0, 0, 0, dialog_info->hwnd,
                            (HMENU)id, 0, NULL);
    Free(textW);
    SendMessageW(*button, WM_SETFONT, (WPARAM)dialog_info->font, 0);

    if (id == taskconfig->nDefaultButton && !dialog_info->default_button) dialog_info->default_button = *button;
}

static void taskdialog_add_buttons(struct taskdialog_info *dialog_info)
{
    const TASKDIALOGCONFIG *taskconfig = dialog_info->taskconfig;
793
    BOOL use_command_links = taskdialog_use_command_link(dialog_info);
794 795 796 797 798
    DWORD flags = taskconfig->dwCommonButtons;
    INT count, max_count;

    /* Allocate enough memory for the custom and the default buttons. Maximum 6 default buttons possible. */
    max_count = 6;
799
    if (!use_command_links && taskconfig->cButtons && taskconfig->pButtons) max_count += taskconfig->cButtons;
800 801 802 803

    dialog_info->buttons = Alloc(max_count * sizeof(*dialog_info->buttons));
    if (!dialog_info->buttons) return;

804
    for (count = 0; !use_command_links && count < taskconfig->cButtons; count++)
805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821
        taskdialog_add_button(dialog_info, &dialog_info->buttons[count], taskconfig->pButtons[count].nButtonID,
                              taskconfig->pButtons[count].pszButtonText, TRUE);

#define TASKDIALOG_INIT_COMMON_BUTTON(id)                                                                             \
    do                                                                                                                \
    {                                                                                                                 \
        taskdialog_add_button(dialog_info, &dialog_info->buttons[count++], ID##id, MAKEINTRESOURCEW(IDS_BUTTON_##id), \
                              FALSE);                                                                                 \
    } while (0)

    if (flags & TDCBF_OK_BUTTON) TASKDIALOG_INIT_COMMON_BUTTON(OK);
    if (flags & TDCBF_YES_BUTTON) TASKDIALOG_INIT_COMMON_BUTTON(YES);
    if (flags & TDCBF_NO_BUTTON) TASKDIALOG_INIT_COMMON_BUTTON(NO);
    if (flags & TDCBF_RETRY_BUTTON) TASKDIALOG_INIT_COMMON_BUTTON(RETRY);
    if (flags & TDCBF_CANCEL_BUTTON) TASKDIALOG_INIT_COMMON_BUTTON(CANCEL);
    if (flags & TDCBF_CLOSE_BUTTON) TASKDIALOG_INIT_COMMON_BUTTON(CLOSE);

822
    if (!count && !dialog_info->command_link_count) TASKDIALOG_INIT_COMMON_BUTTON(OK);
823 824 825 826 827
#undef TASKDIALOG_INIT_COMMON_BUTTON

    dialog_info->button_count = count;
}

828 829 830 831 832 833 834 835 836
static void taskdialog_add_footer_icon(struct taskdialog_info *dialog_info)
{
    if (!dialog_info->taskconfig->u2.hFooterIcon) return;

    dialog_info->footer_icon =
        CreateWindowW(WC_STATICW, NULL, WS_CHILD | WS_VISIBLE | SS_ICON, 0, 0, 0, 0, dialog_info->hwnd, NULL, 0, 0);
    taskdialog_set_icon(dialog_info, TDIE_ICON_FOOTER, dialog_info->taskconfig->u2.hFooterIcon);
}

837 838 839 840 841 842
static void taskdialog_add_footer_text(struct taskdialog_info *dialog_info)
{
    dialog_info->footer_text = taskdialog_create_label(dialog_info, dialog_info->taskconfig->pszFooter,
                                                       dialog_info->font, taskdialog_hyperlink_enabled(dialog_info));
}

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static LONG taskdialog_get_dialog_width(struct taskdialog_info *dialog_info)
{
    const TASKDIALOGCONFIG *taskconfig = dialog_info->taskconfig;
    BOOL syslink = taskdialog_hyperlink_enabled(dialog_info);
    LONG max_width, main_icon_width, screen_width;
    RECT rect;
    SIZE size;

    screen_width = taskdialog_get_reference_rect(taskconfig, &rect);
    if ((taskconfig->dwFlags & TDF_SIZE_TO_CONTENT) && !taskconfig->cxWidth)
    {
        max_width = DIALOG_MIN_WIDTH;
        taskdialog_du_to_px(dialog_info, &max_width, NULL);
        main_icon_width = dialog_info->m.h_spacing;
        if (dialog_info->main_icon) main_icon_width += GetSystemMetrics(SM_CXICON);
        if (dialog_info->content)
        {
            taskdialog_get_label_size(dialog_info, dialog_info->content, 0, &size, syslink);
            max_width = max(max_width, size.cx + main_icon_width + dialog_info->m.h_spacing * 2);
        }
    }
    else
    {
        max_width = max(taskconfig->cxWidth, DIALOG_MIN_WIDTH);
        taskdialog_du_to_px(dialog_info, &max_width, NULL);
    }
    max_width = min(max_width, screen_width);
    return max_width;
}

873
static void taskdialog_label_layout(struct taskdialog_info *dialog_info, HWND hwnd, INT start_x, LONG dialog_width,
874
                                    LONG *dialog_height, BOOL syslink)
875 876 877 878 879 880 881 882 883
{
    LONG x, y, max_width;
    SIZE size;

    if (!hwnd) return;

    x = start_x + dialog_info->m.h_spacing;
    y = *dialog_height + dialog_info->m.v_spacing;
    max_width = dialog_width - x - dialog_info->m.h_spacing;
884
    taskdialog_get_label_size(dialog_info, hwnd, max_width, &size, syslink);
885 886 887 888 889 890 891
    SetWindowPos(hwnd, 0, x, y, size.cx, size.cy, SWP_NOZORDER);
    *dialog_height = y + size.cy;
}

static void taskdialog_layout(struct taskdialog_info *dialog_info)
{
    const TASKDIALOGCONFIG *taskconfig = dialog_info->taskconfig;
892
    BOOL syslink = taskdialog_hyperlink_enabled(dialog_info);
893 894
    static BOOL first_time = TRUE;
    RECT ref_rect;
895
    LONG dialog_width, dialog_height = 0;
896
    LONG h_spacing, v_spacing;
897
    LONG main_icon_right, main_icon_bottom;
898
    LONG expando_right, expando_bottom;
899 900 901
    struct button_layout_info *button_layout_infos;
    LONG button_min_width, button_height;
    LONG *line_widths, line_count, align;
902
    LONG footer_icon_right, footer_icon_bottom;
903 904 905 906
    LONG x, y;
    SIZE size;
    INT i;

907 908
    taskdialog_get_reference_rect(dialog_info->taskconfig, &ref_rect);
    dialog_width = taskdialog_get_dialog_width(dialog_info);
909 910 911 912

    h_spacing = dialog_info->m.h_spacing;
    v_spacing = dialog_info->m.v_spacing;

913 914 915 916 917 918 919 920 921 922 923 924 925 926
    /* Main icon */
    main_icon_right = 0;
    main_icon_bottom = 0;
    if (dialog_info->main_icon)
    {
        x = h_spacing;
        y = dialog_height + v_spacing;
        size.cx = GetSystemMetrics(SM_CXICON);
        size.cy = GetSystemMetrics(SM_CYICON);
        SetWindowPos(dialog_info->main_icon, 0, x, y, size.cx, size.cy, SWP_NOZORDER);
        main_icon_right = x + size.cx;
        main_icon_bottom = y + size.cy;
    }

927
    /* Main instruction */
928 929
    taskdialog_label_layout(dialog_info, dialog_info->main_instruction, main_icon_right, dialog_width, &dialog_height,
                            FALSE);
930 931

    /* Content */
932
    taskdialog_label_layout(dialog_info, dialog_info->content, main_icon_right, dialog_width, &dialog_height, syslink);
933

934 935 936 937 938
    /* Expanded information */
    if (!(taskconfig->dwFlags & TDF_EXPAND_FOOTER_AREA) && dialog_info->expanded)
        taskdialog_label_layout(dialog_info, dialog_info->expanded_info, main_icon_right, dialog_width, &dialog_height,
                                syslink);

939 940 941 942 943 944 945 946 947 948 949
    /* Progress bar */
    if (dialog_info->progress_bar)
    {
        x = main_icon_right + h_spacing;
        y = dialog_height + v_spacing;
        size.cx = dialog_width - x - h_spacing;
        size.cy = GetSystemMetrics(SM_CYVSCROLL);
        SetWindowPos(dialog_info->progress_bar, 0, x, y, size.cx, size.cy, SWP_NOZORDER);
        dialog_height = y + size.cy;
    }

950 951 952 953
    /* Radio buttons */
    for (i = 0; i < dialog_info->radio_button_count; i++)
    {
        x = main_icon_right + h_spacing;
954
        y = dialog_height + v_spacing;
955 956 957 958 959 960
        taskdialog_get_radio_button_size(dialog_info, dialog_info->radio_buttons[i], dialog_width - x - h_spacing, &size);
        size.cx = dialog_width - x - h_spacing;
        SetWindowPos(dialog_info->radio_buttons[i], 0, x, y, size.cx, size.cy, SWP_NOZORDER);
        dialog_height = y + size.cy;
    }

961 962 963 964 965 966 967 968 969 970 971 972 973
    /* Command links */
    for (i = 0; i < dialog_info->command_link_count; i++)
    {
        x = main_icon_right + h_spacing;
        y = dialog_height + v_spacing;
        taskdialog_get_label_size(dialog_info, dialog_info->command_links[i], dialog_width - x - h_spacing, &size, FALSE);
        size.cx = dialog_width - x - h_spacing;
        /* Add spacing */
        size.cy += 4;
        SetWindowPos(dialog_info->command_links[i], 0, x, y, size.cx, size.cy, SWP_NOZORDER);
        dialog_height = y + size.cy;
    }

974
    dialog_height = max(dialog_height, main_icon_bottom);
975

976 977 978 979 980 981 982 983 984 985 986 987 988
    expando_right = 0;
    expando_bottom = dialog_height;
    /* Expando control */
    if (dialog_info->expando_button)
    {
        x = h_spacing;
        y = dialog_height + v_spacing;
        taskdialog_get_expando_size(dialog_info, dialog_info->expando_button, &size);
        SetWindowPos(dialog_info->expando_button, 0, x, y, size.cx, size.cy, SWP_NOZORDER);
        expando_right = x + size.cx;
        expando_bottom = y + size.cy;
    }

989 990 991 992 993 994 995 996 997 998 999 1000 1001
    /* Verification box */
    if (dialog_info->verification_box)
    {
        x = h_spacing;
        y = expando_bottom + v_spacing;
        size.cx = DIALOG_MIN_WIDTH / 2;
        taskdialog_du_to_px(dialog_info, &size.cx, NULL);
        taskdialog_get_radio_button_size(dialog_info, dialog_info->verification_box, size.cx, &size);
        SetWindowPos(dialog_info->verification_box, 0, x, y, size.cx, size.cy, SWP_NOZORDER);
        expando_right = max(expando_right, x + size.cx);
        expando_bottom = y + size.cy;
    }

1002
    /* Common and custom buttons */
1003 1004
    button_layout_infos = Alloc(dialog_info->button_count * sizeof(*button_layout_infos));
    line_widths = Alloc(dialog_info->button_count * sizeof(*line_widths));
1005 1006 1007 1008

    button_min_width = DIALOG_BUTTON_WIDTH;
    button_height = DIALOG_BUTTON_HEIGHT;
    taskdialog_du_to_px(dialog_info, &button_min_width, &button_height);
1009
    for (i = 0; i < dialog_info->button_count; i++)
1010
    {
1011 1012
        taskdialog_get_label_size(dialog_info, dialog_info->buttons[i], dialog_width - expando_right - h_spacing * 2,
                                  &size, FALSE);
1013 1014 1015 1016
        button_layout_infos[i].width = max(size.cx, button_min_width);
    }

    /* Separate buttons into lines */
1017
    x = expando_right + h_spacing;
1018
    for (i = 0, line_count = 0; i < dialog_info->button_count; i++)
1019
    {
1020 1021 1022 1023 1024
        button_layout_infos[i].line = line_count;
        x += button_layout_infos[i].width + h_spacing;
        line_widths[line_count] += button_layout_infos[i].width + h_spacing;

        if ((i + 1 < dialog_info->button_count) && (x + button_layout_infos[i + 1].width + h_spacing >= dialog_width))
1025
        {
1026
            x = expando_right + h_spacing;
1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038
            line_count++;
        }
    }
    line_count++;

    /* Try to balance lines so they are about the same size */
    for (i = 1; i < line_count - 1; i++)
    {
        int diff_now = abs(line_widths[i] - line_widths[i - 1]);
        unsigned int j, last_button = 0;
        int diff_changed;

1039
        for (j = 0; j < dialog_info->button_count; j++)
1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063
            if (button_layout_infos[j].line == i - 1) last_button = j;

        /* Difference in length of both lines if we wrapped the last button from the last line into this one */
        diff_changed = abs(2 * button_layout_infos[last_button].width + line_widths[i] - line_widths[i - 1]);

        if (diff_changed < diff_now)
        {
            button_layout_infos[last_button].line = i;
            line_widths[i] += button_layout_infos[last_button].width;
            line_widths[i - 1] -= button_layout_infos[last_button].width;
        }
    }

    /* Calculate left alignment so all lines are as far right as possible. */
    align = dialog_width - h_spacing;
    for (i = 0; i < line_count; i++)
    {
        int new_alignment = dialog_width - line_widths[i];
        if (new_alignment < align) align = new_alignment;
    }

    /* Now that we got them all positioned, move all buttons */
    x = align;
    size.cy = button_height;
1064
    for (i = 0; i < dialog_info->button_count; i++)
1065 1066 1067 1068 1069 1070 1071 1072 1073 1074
    {
        /* New line */
        if (i > 0 && button_layout_infos[i].line != button_layout_infos[i - 1].line)
        {
            x = align;
            dialog_height += size.cy + v_spacing;
        }

        y = dialog_height + v_spacing;
        size.cx = button_layout_infos[i].width;
1075
        SetWindowPos(dialog_info->buttons[i], 0, x, y, size.cx, size.cy, SWP_NOZORDER);
1076 1077 1078 1079 1080
        x += button_layout_infos[i].width + h_spacing;
    }

    /* Add height for last row button and spacing */
    dialog_height += size.cy + v_spacing;
1081
    dialog_height = max(dialog_height, expando_bottom);
1082 1083 1084 1085

    Free(button_layout_infos);
    Free(line_widths);

1086
    /* Footer icon */
1087 1088
    footer_icon_right = 0;
    footer_icon_bottom = dialog_height;
1089 1090 1091 1092 1093 1094 1095
    if (dialog_info->footer_icon)
    {
        x = h_spacing;
        y = dialog_height + v_spacing;
        size.cx = GetSystemMetrics(SM_CXSMICON);
        size.cy = GetSystemMetrics(SM_CYSMICON);
        SetWindowPos(dialog_info->footer_icon, 0, x, y, size.cx, size.cy, SWP_NOZORDER);
1096 1097
        footer_icon_right = x + size.cx;
        footer_icon_bottom = y + size.cy;
1098 1099
    }

1100 1101 1102 1103 1104
    /* Footer text */
    taskdialog_label_layout(dialog_info, dialog_info->footer_text, footer_icon_right, dialog_width, &dialog_height,
                            syslink);
    dialog_height = max(dialog_height, footer_icon_bottom);

1105 1106 1107 1108
    /* Expanded information */
    if ((taskconfig->dwFlags & TDF_EXPAND_FOOTER_AREA) && dialog_info->expanded)
        taskdialog_label_layout(dialog_info, dialog_info->expanded_info, 0, dialog_width, &dialog_height, syslink);

1109 1110 1111 1112 1113 1114 1115
    /* Add height for spacing, title height and frame height */
    dialog_height += v_spacing;
    dialog_height += GetSystemMetrics(SM_CYCAPTION);
    dialog_height += GetSystemMetrics(SM_CXDLGFRAME);

    if (first_time)
    {
1116 1117
        x = (ref_rect.left + ref_rect.right - dialog_width) / 2;
        y = (ref_rect.top + ref_rect.bottom - dialog_height) / 2;
1118 1119 1120 1121 1122 1123 1124
        SetWindowPos(dialog_info->hwnd, 0, x, y, dialog_width, dialog_height, SWP_NOZORDER);
        first_time = FALSE;
    }
    else
        SetWindowPos(dialog_info->hwnd, 0, 0, 0, dialog_width, dialog_height, SWP_NOMOVE | SWP_NOZORDER);
}

1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159
static void taskdialog_draw_expando_control(struct taskdialog_info *dialog_info, LPDRAWITEMSTRUCT dis)
{
    HWND hwnd;
    HDC hdc;
    RECT rect = {0};
    WCHAR *text;
    LONG icon_width, icon_height, text_offset;
    UINT style = DFCS_FLAT;
    BOOL draw_focus;

    hdc = dis->hDC;
    hwnd = dis->hwndItem;

    SendMessageW(hwnd, WM_ERASEBKGND, (WPARAM)hdc, 0);

    icon_width = DIALOG_EXPANDO_ICON_WIDTH;
    icon_height = DIALOG_EXPANDO_ICON_HEIGHT;
    taskdialog_du_to_px(dialog_info, &icon_width, &icon_height);
    rect.right = icon_width;
    rect.bottom = icon_height;
    style |= dialog_info->expanded ? DFCS_SCROLLUP : DFCS_SCROLLDOWN;
    DrawFrameControl(hdc, &rect, DFC_SCROLL, style);

    GetCharWidthW(hdc, '0', '0', &text_offset);
    text_offset /= 2;

    rect = dis->rcItem;
    rect.left += icon_width + text_offset;
    text = dialog_info->expanded ? dialog_info->expanded_text : dialog_info->collapsed_text;
    DrawTextW(hdc, text, -1, &rect, DT_WORDBREAK | DT_END_ELLIPSIS | DT_EXPANDTABS);

    draw_focus = (dis->itemState & ODS_FOCUS) && !(dis->itemState & ODS_NOFOCUSRECT);
    if(draw_focus) DrawFocusRect(hdc, &rect);
}

1160 1161
static void taskdialog_init(struct taskdialog_info *dialog_info, HWND hwnd)
{
1162
    const TASKDIALOGCONFIG *taskconfig = dialog_info->taskconfig;
1163 1164
    NONCLIENTMETRICSW ncm;
    HDC hdc;
1165
    INT id;
1166 1167 1168

    ncm.cbSize = sizeof(ncm);
    SystemParametersInfoW(SPI_GETNONCLIENTMETRICS, ncm.cbSize, &ncm, 0);
1169

1170 1171
    memset(dialog_info, 0, sizeof(*dialog_info));
    dialog_info->taskconfig = taskconfig;
1172
    dialog_info->hwnd = hwnd;
1173 1174 1175 1176 1177 1178 1179 1180 1181 1182
    dialog_info->font = CreateFontIndirectW(&ncm.lfMessageFont);

    hdc = GetDC(dialog_info->hwnd);
    SelectObject(hdc, dialog_info->font);
    dialog_info->m.x_baseunit = GdiGetCharDimensions(hdc, NULL, &dialog_info->m.y_baseunit);
    ReleaseDC(dialog_info->hwnd, hdc);

    dialog_info->m.h_spacing = DIALOG_SPACING;
    dialog_info->m.v_spacing = DIALOG_SPACING;
    taskdialog_du_to_px(dialog_info, &dialog_info->m.h_spacing, &dialog_info->m.v_spacing);
1183 1184 1185 1186 1187 1188

    if (taskconfig->dwFlags & TDF_CALLBACK_TIMER)
    {
        SetTimer(hwnd, ID_TIMER, DIALOG_TIMER_MS, NULL);
        dialog_info->last_timer_tick = GetTickCount();
    }
1189

1190
    taskdialog_add_main_icon(dialog_info);
1191
    taskdialog_add_main_instruction(dialog_info);
1192
    taskdialog_add_content(dialog_info);
1193
    taskdialog_add_expanded_info(dialog_info);
1194
    taskdialog_add_progress_bar(dialog_info);
1195
    taskdialog_add_radio_buttons(dialog_info);
1196
    taskdialog_add_command_links(dialog_info);
1197
    taskdialog_add_expando_button(dialog_info);
1198
    taskdialog_add_verification_box(dialog_info);
1199
    taskdialog_add_buttons(dialog_info);
1200
    taskdialog_add_footer_icon(dialog_info);
1201
    taskdialog_add_footer_text(dialog_info);
1202 1203

    /* Set default button */
1204 1205
    if (!dialog_info->default_button && dialog_info->command_links)
        dialog_info->default_button = dialog_info->command_links[0];
1206 1207 1208 1209
    if (!dialog_info->default_button) dialog_info->default_button = dialog_info->buttons[0];
    SendMessageW(dialog_info->hwnd, WM_NEXTDLGCTL, (WPARAM)dialog_info->default_button, TRUE);
    id = GetWindowLongW(dialog_info->default_button, GWLP_ID);
    SendMessageW(dialog_info->hwnd, DM_SETDEFID, id, 0);
1210

1211 1212 1213 1214 1215 1216 1217
    dialog_info->has_cancel =
        (taskconfig->dwFlags & TDF_ALLOW_DIALOG_CANCELLATION)
        || taskdialog_find_button(dialog_info->command_links, dialog_info->command_link_count, IDCANCEL)
        || taskdialog_find_button(dialog_info->buttons, dialog_info->button_count, IDCANCEL);

    if (!dialog_info->has_cancel) DeleteMenu(GetSystemMenu(hwnd, FALSE), SC_CLOSE, MF_BYCOMMAND);

1218
    taskdialog_layout(dialog_info);
1219 1220
}

1221 1222 1223 1224 1225 1226
static BOOL CALLBACK takdialog_destroy_control(HWND hwnd, LPARAM lParam)
{
    DestroyWindow(hwnd);
    return TRUE;
}

1227 1228
static void taskdialog_destroy(struct taskdialog_info *dialog_info)
{
1229 1230
    EnumChildWindows(dialog_info->hwnd, takdialog_destroy_control, 0);

1231
    if (dialog_info->taskconfig->dwFlags & TDF_CALLBACK_TIMER) KillTimer(dialog_info->hwnd, ID_TIMER);
1232
    if (dialog_info->font) DeleteObject(dialog_info->font);
1233
    if (dialog_info->main_instruction_font) DeleteObject(dialog_info->main_instruction_font);
1234 1235 1236
    Free(dialog_info->buttons);
    Free(dialog_info->radio_buttons);
    Free(dialog_info->command_links);
1237 1238
    Free(dialog_info->expanded_text);
    Free(dialog_info->collapsed_text);
1239 1240
}

1241 1242
static INT_PTR CALLBACK taskdialog_proc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
1243 1244
    static const WCHAR taskdialog_info_propnameW[] = {'T','a','s','k','D','i','a','l','o','g','I','n','f','o',0};
    struct taskdialog_info *dialog_info;
1245
    LRESULT result;
1246

1247 1248
    TRACE("hwnd=%p msg=0x%04x wparam=%lx lparam=%lx\n", hwnd, msg, wParam, lParam);

1249 1250 1251
    if (msg != WM_INITDIALOG)
        dialog_info = GetPropW(hwnd, taskdialog_info_propnameW);

1252 1253
    switch (msg)
    {
1254 1255 1256 1257 1258 1259 1260 1261 1262
        case TDM_NAVIGATE_PAGE:
            dialog_info->taskconfig = (const TASKDIALOGCONFIG *)lParam;
            taskdialog_destroy(dialog_info);
            taskdialog_init(dialog_info, hwnd);
            taskdialog_notify(dialog_info, TDN_DIALOG_CONSTRUCTED, 0, 0);
            /* Default radio button click notification is sent before TDN_NAVIGATED */
            taskdialog_check_default_radio_buttons(dialog_info);
            taskdialog_notify(dialog_info, TDN_NAVIGATED, 0, 0);
            break;
1263
        case TDM_CLICK_BUTTON:
1264
            taskdialog_click_button(dialog_info, wParam);
1265
            break;
1266 1267 1268
        case TDM_ENABLE_BUTTON:
            taskdialog_enable_button(dialog_info, wParam, lParam);
            break;
1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298
        case TDM_SET_MARQUEE_PROGRESS_BAR:
        {
            BOOL marquee = wParam;
            LONG style;
            if(!dialog_info->progress_bar) break;
            style = GetWindowLongW(dialog_info->progress_bar, GWL_STYLE);
            style = marquee ? style | PBS_MARQUEE : style & (~PBS_MARQUEE);
            SetWindowLongW(dialog_info->progress_bar, GWL_STYLE, style);
            break;
        }
        case TDM_SET_PROGRESS_BAR_STATE:
            result = SendMessageW(dialog_info->progress_bar, PBM_SETSTATE, wParam, 0);
            SetWindowLongPtrW(hwnd, DWLP_MSGRESULT, result);
            break;
        case TDM_SET_PROGRESS_BAR_RANGE:
            result = SendMessageW(dialog_info->progress_bar, PBM_SETRANGE, 0, lParam);
            SetWindowLongPtrW(hwnd, DWLP_MSGRESULT, result);
            break;
        case TDM_SET_PROGRESS_BAR_POS:
            result = 0;
            if (dialog_info->progress_bar)
            {
                LONG style = GetWindowLongW(dialog_info->progress_bar, GWL_STYLE);
                if (!(style & PBS_MARQUEE)) result = SendMessageW(dialog_info->progress_bar, PBM_SETPOS, wParam, 0);
            }
            SetWindowLongPtrW(hwnd, DWLP_MSGRESULT, result);
            break;
        case TDM_SET_PROGRESS_BAR_MARQUEE:
            SendMessageW(dialog_info->progress_bar, PBM_SETMARQUEE, wParam, lParam);
            break;
1299 1300 1301 1302 1303 1304 1305
        case TDM_SET_ELEMENT_TEXT:
            taskdialog_set_element_text(dialog_info, wParam, (const WCHAR *)lParam);
            taskdialog_layout(dialog_info);
            break;
        case TDM_UPDATE_ELEMENT_TEXT:
            taskdialog_set_element_text(dialog_info, wParam, (const WCHAR *)lParam);
            break;
1306 1307 1308 1309 1310 1311
        case TDM_CLICK_RADIO_BUTTON:
            taskdialog_click_radio_button(dialog_info, wParam);
            break;
        case TDM_ENABLE_RADIO_BUTTON:
            taskdialog_enable_radio_button(dialog_info, wParam, lParam);
            break;
1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324
        case TDM_CLICK_VERIFICATION:
        {
            BOOL checked = (BOOL)wParam;
            BOOL focused = (BOOL)lParam;
            dialog_info->verification_checked = checked;
            if (dialog_info->verification_box)
            {
                SendMessageW(dialog_info->verification_box, BM_SETCHECK, checked ? BST_CHECKED : BST_UNCHECKED, 0);
                taskdialog_notify(dialog_info, TDN_VERIFICATION_CLICKED, checked, 0);
                if (focused) SetFocus(dialog_info->verification_box);
            }
            break;
        }
1325 1326 1327
        case TDM_SET_BUTTON_ELEVATION_REQUIRED_STATE:
            taskdialog_button_set_shield(dialog_info, wParam, lParam);
            break;
1328 1329 1330
        case TDM_UPDATE_ICON:
            taskdialog_set_icon(dialog_info, wParam, (HICON)lParam);
            break;
1331 1332 1333
        case WM_INITDIALOG:
            dialog_info = (struct taskdialog_info *)lParam;

1334 1335 1336
            taskdialog_init(dialog_info, hwnd);

            SetPropW(hwnd, taskdialog_info_propnameW, dialog_info);
1337 1338
            taskdialog_notify(dialog_info, TDN_DIALOG_CONSTRUCTED, 0, 0);
            taskdialog_notify(dialog_info, TDN_CREATED, 0, 0);
1339 1340
            /* Default radio button click notification sent after TDN_CREATED */
            taskdialog_check_default_radio_buttons(dialog_info);
1341
            return FALSE;
1342 1343 1344
        case WM_COMMAND:
            if (HIWORD(wParam) == BN_CLICKED)
            {
1345
                taskdialog_on_button_click(dialog_info, (HWND)lParam, LOWORD(wParam));
1346
                break;
1347
            }
1348
            return FALSE;
1349 1350 1351
        case WM_HELP:
            taskdialog_notify(dialog_info, TDN_HELP, 0, 0);
            break;
1352 1353 1354 1355 1356 1357 1358 1359
        case WM_TIMER:
            if (ID_TIMER == wParam)
            {
                DWORD elapsed = GetTickCount() - dialog_info->last_timer_tick;
                if (taskdialog_notify(dialog_info, TDN_TIMER, elapsed, 0) == S_FALSE)
                    dialog_info->last_timer_tick = GetTickCount();
            }
            break;
1360 1361 1362 1363
        case WM_NOTIFY:
        {
            PNMLINK pnmLink = (PNMLINK)lParam;
            HWND hwndFrom = pnmLink->hdr.hwndFrom;
1364
            if ((taskdialog_hyperlink_enabled(dialog_info))
1365 1366
                && (hwndFrom == dialog_info->content || hwndFrom == dialog_info->expanded_info
                    || hwndFrom == dialog_info->footer_text)
1367 1368 1369 1370 1371 1372 1373
                && (pnmLink->hdr.code == NM_CLICK || pnmLink->hdr.code == NM_RETURN))
            {
                taskdialog_notify(dialog_info, TDN_HYPERLINK_CLICKED, 0, (LPARAM)pnmLink->item.szUrl);
                break;
            }
            return FALSE;
        }
1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384
        case WM_DRAWITEM:
        {
            LPDRAWITEMSTRUCT dis = (LPDRAWITEMSTRUCT)lParam;
            if (dis->hwndItem == dialog_info->expando_button)
            {
                taskdialog_draw_expando_control(dialog_info, dis);
                SetWindowLongPtrW(hwnd, DWLP_MSGRESULT, TRUE);
                break;
            }
            return FALSE;
        }
1385 1386 1387
        case WM_DESTROY:
            taskdialog_notify(dialog_info, TDN_DESTROYED, 0, 0);
            RemovePropW(hwnd, taskdialog_info_propnameW);
1388
            taskdialog_destroy(dialog_info);
1389
            break;
1390 1391 1392 1393 1394 1395 1396 1397 1398
        case WM_CLOSE:
            if (dialog_info->has_cancel)
            {
                if(taskdialog_notify(dialog_info, TDN_BUTTON_CLICKED, IDCANCEL, 0) == S_OK)
                    EndDialog(hwnd, IDCANCEL);
                SetWindowLongPtrW(hwnd, DWLP_MSGRESULT, 0);
                break;
            }
            return FALSE;
1399 1400
        default:
            return FALSE;
1401
    }
1402
    return TRUE;
1403 1404
}

1405 1406 1407 1408 1409 1410
/***********************************************************************
 * TaskDialogIndirect [COMCTL32.@]
 */
HRESULT WINAPI TaskDialogIndirect(const TASKDIALOGCONFIG *taskconfig, int *button,
                                  int *radio_button, BOOL *verification_flag_checked)
{
1411
    struct taskdialog_info dialog_info;
1412
    DLGTEMPLATE *template;
1413 1414 1415 1416
    INT ret;

    TRACE("%p, %p, %p, %p\n", taskconfig, button, radio_button, verification_flag_checked);

1417 1418 1419
    if (!taskconfig || taskconfig->cbSize != sizeof(TASKDIALOGCONFIG))
        return E_INVALIDARG;

1420
    dialog_info.taskconfig = taskconfig;
1421

1422
    template = create_taskdialog_template(taskconfig);
1423
    ret = (short)DialogBoxIndirectParamW(taskconfig->hInstance, template, taskconfig->hwndParent,
1424
            taskdialog_proc, (LPARAM)&dialog_info);
1425
    Free(template);
1426 1427

    if (button) *button = ret;
1428
    if (radio_button) *radio_button = dialog_info.selected_radio_id;
1429
    if (verification_flag_checked) *verification_flag_checked = dialog_info.verification_checked;
1430 1431 1432

    return S_OK;
}
1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455

/***********************************************************************
 * TaskDialog [COMCTL32.@]
 */
HRESULT WINAPI TaskDialog(HWND owner, HINSTANCE hinst, const WCHAR *title, const WCHAR *main_instruction,
    const WCHAR *content, TASKDIALOG_COMMON_BUTTON_FLAGS common_buttons, const WCHAR *icon, int *button)
{
    TASKDIALOGCONFIG taskconfig;

    TRACE("%p, %p, %s, %s, %s, %#x, %s, %p\n", owner, hinst, debugstr_w(title), debugstr_w(main_instruction),
        debugstr_w(content), common_buttons, debugstr_w(icon), button);

    memset(&taskconfig, 0, sizeof(taskconfig));
    taskconfig.cbSize = sizeof(taskconfig);
    taskconfig.hwndParent = owner;
    taskconfig.hInstance = hinst;
    taskconfig.dwCommonButtons = common_buttons;
    taskconfig.pszWindowTitle = title;
    taskconfig.u.pszMainIcon = icon;
    taskconfig.pszMainInstruction = main_instruction;
    taskconfig.pszContent = content;
    return TaskDialogIndirect(&taskconfig, button, NULL, NULL);
}