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ara-mdk / platform / external / chromium / 72a454cd3513ac24fbdd0e0cb9ad70b86a99b801 / . / chrome / browser / ui / gtk / gtk_util.cc
blob: e757c74cc614bf0363b37ea526f3f78d69bac169 [file] [log] [blame]
// Copyright (c) 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/ui/gtk/gtk_util.h"
#include <cairo/cairo.h>
#include <gdk/gdkx.h>
#include <gtk/gtk.h>
#include <cstdarg>
#include <map>
#include "base/environment.h"
#include "base/i18n/rtl.h"
#include "base/linux_util.h"
#include "base/logging.h"
#include "base/nix/xdg_util.h"
#include "base/string_number_conversions.h"
#include "base/utf_string_conversions.h"
#include "chrome/browser/autocomplete/autocomplete.h"
#include "chrome/browser/autocomplete/autocomplete_classifier.h"
#include "chrome/browser/autocomplete/autocomplete_match.h"
#include "chrome/browser/browser_list.h"
#include "chrome/browser/browser_window.h"
#include "chrome/browser/disposition_utils.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/renderer_host/render_view_host.h"
#include "chrome/browser/tab_contents/tab_contents.h"
#include "chrome/browser/ui/gtk/cairo_cached_surface.h"
#include "chrome/browser/ui/gtk/gtk_theme_provider.h"
#include "chrome/common/renderer_preferences.h"
#include "googleurl/src/gurl.h"
#include "grit/theme_resources.h"
#include "third_party/skia/include/core/SkBitmap.h"
#include "third_party/skia/include/core/SkColor.h"
#include "ui/base/l10n/l10n_util.h"
#include "ui/base/resource/resource_bundle.h"
#include "ui/base/x/x11_util.h"
#include "ui/gfx/gtk_util.h"
#if defined(OS_CHROMEOS)
#include "chrome/browser/chromeos/frame/browser_view.h"
#include "chrome/browser/chromeos/native_dialog_window.h"
#include "views/window/window.h"
#else
#include "chrome/browser/ui/gtk/browser_window_gtk.h"
#endif
using WebKit::WebDragOperationsMask;
using WebKit::WebDragOperation;
using WebKit::WebDragOperationNone;
using WebKit::WebDragOperationCopy;
using WebKit::WebDragOperationLink;
using WebKit::WebDragOperationMove;
namespace {
const char kBoldLabelMarkup[] = "<span weight='bold'>%s</span>";
// Callback used in RemoveAllChildren.
void RemoveWidget(GtkWidget* widget, gpointer container) {
gtk_container_remove(GTK_CONTAINER(container), widget);
}
// These two functions are copped almost directly from gtk core. The only
// difference is that they accept middle clicks.
gboolean OnMouseButtonPressed(GtkWidget* widget, GdkEventButton* event,
gpointer userdata) {
if (event->type == GDK_BUTTON_PRESS) {
if (gtk_button_get_focus_on_click(GTK_BUTTON(widget)) &&
!GTK_WIDGET_HAS_FOCUS(widget)) {
gtk_widget_grab_focus(widget);
}
gint button_mask = GPOINTER_TO_INT(userdata);
if (button_mask & (1 << event->button))
gtk_button_pressed(GTK_BUTTON(widget));
}
return TRUE;
}
gboolean OnMouseButtonReleased(GtkWidget* widget, GdkEventButton* event,
gpointer userdata) {
gint button_mask = GPOINTER_TO_INT(userdata);
if (button_mask && (1 << event->button))
gtk_button_released(GTK_BUTTON(widget));
return TRUE;
}
// Returns the approximate number of characters that can horizontally fit in
// |pixel_width| pixels.
int GetCharacterWidthForPixels(GtkWidget* widget, int pixel_width) {
DCHECK(GTK_WIDGET_REALIZED(widget))
<< " widget must be realized to compute font metrics correctly";
PangoContext* context = gtk_widget_create_pango_context(widget);
PangoFontMetrics* metrics = pango_context_get_metrics(context,
widget->style->font_desc, pango_context_get_language(context));
// This technique (max of char and digit widths) matches the code in
// gtklabel.c.
int char_width = pixel_width * PANGO_SCALE /
std::max(pango_font_metrics_get_approximate_char_width(metrics),
pango_font_metrics_get_approximate_digit_width(metrics));
pango_font_metrics_unref(metrics);
g_object_unref(context);
return char_width;
}
void OnLabelRealize(GtkWidget* label, gpointer pixel_width) {
gtk_label_set_width_chars(
GTK_LABEL(label),
GetCharacterWidthForPixels(label,GPOINTER_TO_INT(pixel_width)));
}
// Ownership of |icon_list| is passed to the caller.
GList* GetIconList() {
ResourceBundle& rb = ResourceBundle::GetSharedInstance();
GList* icon_list = NULL;
icon_list = g_list_append(icon_list, rb.GetPixbufNamed(IDR_PRODUCT_ICON_32));
icon_list = g_list_append(icon_list, rb.GetPixbufNamed(IDR_PRODUCT_LOGO_16));
return icon_list;
}
// Expose event handler for a container that simply suppresses the default
// drawing and propagates the expose event to the container's children.
gboolean PaintNoBackground(GtkWidget* widget,
GdkEventExpose* event,
gpointer unused) {
GList* children = gtk_container_get_children(GTK_CONTAINER(widget));
for (GList* item = children; item; item = item->next) {
gtk_container_propagate_expose(GTK_CONTAINER(widget),
GTK_WIDGET(item->data),
event);
}
g_list_free(children);
return TRUE;
}
#if defined(OS_CHROMEOS)
TabContents* GetBrowserWindowSelectedTabContents(BrowserWindow* window) {
chromeos::BrowserView* browser_view = static_cast<chromeos::BrowserView*>(
window);
return browser_view->GetSelectedTabContents();
}
GtkWidget* GetBrowserWindowFocusedWidget(BrowserWindow* window) {
gfx::NativeView widget = gtk_window_get_focus(window->GetNativeHandle());
if (widget == NULL) {
chromeos::BrowserView* browser_view = static_cast<chromeos::BrowserView*>(
window);
widget = browser_view->saved_focused_widget();
}
return widget;
}
#else
TabContents* GetBrowserWindowSelectedTabContents(BrowserWindow* window) {
BrowserWindowGtk* browser_window = static_cast<BrowserWindowGtk*>(
window);
return browser_window->browser()->GetSelectedTabContents();
}
GtkWidget* GetBrowserWindowFocusedWidget(BrowserWindow* window) {
return gtk_window_get_focus(window->GetNativeHandle());
}
#endif
} // namespace
namespace event_utils {
WindowOpenDisposition DispositionFromEventFlags(guint event_flags) {
return disposition_utils::DispositionFromClick(
event_flags & GDK_BUTTON2_MASK,
event_flags & GDK_MOD1_MASK,
event_flags & GDK_CONTROL_MASK,
event_flags & GDK_META_MASK,
event_flags & GDK_SHIFT_MASK);
}
} // namespace event_utils
namespace gtk_util {
const GdkColor kGdkWhite = GDK_COLOR_RGB(0xff, 0xff, 0xff);
const GdkColor kGdkGray = GDK_COLOR_RGB(0x7f, 0x7f, 0x7f);
const GdkColor kGdkBlack = GDK_COLOR_RGB(0x00, 0x00, 0x00);
const GdkColor kGdkGreen = GDK_COLOR_RGB(0x00, 0xff, 0x00);
GtkWidget* CreateLabeledControlsGroup(std::vector<GtkWidget*>* labels,
const char* text, ...) {
va_list ap;
va_start(ap, text);
GtkWidget* table = gtk_table_new(0, 2, FALSE);
gtk_table_set_col_spacing(GTK_TABLE(table), 0, kLabelSpacing);
gtk_table_set_row_spacings(GTK_TABLE(table), kControlSpacing);
for (guint row = 0; text; ++row) {
gtk_table_resize(GTK_TABLE(table), row + 1, 2);
GtkWidget* control = va_arg(ap, GtkWidget*);
GtkWidget* label = gtk_label_new(text);
gtk_misc_set_alignment(GTK_MISC(label), 0, 0.5);
if (labels)
labels->push_back(label);
gtk_table_attach(GTK_TABLE(table), label,
0, 1, row, row + 1,
GTK_FILL, GTK_FILL,
0, 0);
gtk_table_attach_defaults(GTK_TABLE(table), control,
1, 2, row, row + 1);
text = va_arg(ap, const char*);
}
va_end(ap);
return table;
}
GtkWidget* CreateGtkBorderBin(GtkWidget* child, const GdkColor* color,
int top, int bottom, int left, int right) {
// Use a GtkEventBox to get the background painted. However, we can't just
// use a container border, since it won't paint there. Use an alignment
// inside to get the sizes exactly of how we want the border painted.
GtkWidget* ebox = gtk_event_box_new();
if (color)
gtk_widget_modify_bg(ebox, GTK_STATE_NORMAL, color);
GtkWidget* alignment = gtk_alignment_new(0.0, 0.0, 1.0, 1.0);
gtk_alignment_set_padding(GTK_ALIGNMENT(alignment), top, bottom, left, right);
gtk_container_add(GTK_CONTAINER(alignment), child);
gtk_container_add(GTK_CONTAINER(ebox), alignment);
return ebox;
}
GtkWidget* LeftAlignMisc(GtkWidget* misc) {
gtk_misc_set_alignment(GTK_MISC(misc), 0, 0.5);
return misc;
}
GtkWidget* CreateBoldLabel(const std::string& text) {
GtkWidget* label = gtk_label_new(NULL);
char* markup = g_markup_printf_escaped(kBoldLabelMarkup, text.c_str());
gtk_label_set_markup(GTK_LABEL(label), markup);
g_free(markup);
return LeftAlignMisc(label);
}
void GetWidgetSizeFromCharacters(
GtkWidget* widget, double width_chars, double height_lines,
int* width, int* height) {
DCHECK(GTK_WIDGET_REALIZED(widget))
<< " widget must be realized to compute font metrics correctly";
PangoContext* context = gtk_widget_create_pango_context(widget);
PangoFontMetrics* metrics = pango_context_get_metrics(context,
widget->style->font_desc, pango_context_get_language(context));
if (width) {
*width = static_cast<int>(
pango_font_metrics_get_approximate_char_width(metrics) *
width_chars / PANGO_SCALE);
}
if (height) {
*height = static_cast<int>(
(pango_font_metrics_get_ascent(metrics) +
pango_font_metrics_get_descent(metrics)) *
height_lines / PANGO_SCALE);
}
pango_font_metrics_unref(metrics);
g_object_unref(context);
}
void GetWidgetSizeFromResources(
GtkWidget* widget, int width_chars, int height_lines,
int* width, int* height) {
DCHECK(GTK_WIDGET_REALIZED(widget))
<< " widget must be realized to compute font metrics correctly";
double chars = 0;
if (width)
base::StringToDouble(l10n_util::GetStringUTF8(width_chars), &chars);
double lines = 0;
if (height)
base::StringToDouble(l10n_util::GetStringUTF8(height_lines), &lines);
GetWidgetSizeFromCharacters(widget, chars, lines, width, height);
}
void SetWindowSizeFromResources(GtkWindow* window,
int width_id, int height_id, bool resizable) {
int width = -1;
int height = -1;
gtk_util::GetWidgetSizeFromResources(GTK_WIDGET(window), width_id, height_id,
(width_id != -1) ? &width : NULL,
(height_id != -1) ? &height : NULL);
if (resizable) {
gtk_window_set_default_size(window, width, height);
} else {
// For a non-resizable window, GTK tries to snap the window size
// to the minimum size around the content. We use the sizes in
// the resources to set *minimum* window size to allow windows
// with long titles to be wide enough to display their titles.
//
// But if GTK wants to make the window *wider* due to very wide
// controls, we should allow that too, so be careful to pick the
// wider of the resources size and the natural window size.
gtk_widget_show_all(GTK_BIN(window)->child);
GtkRequisition requisition;
gtk_widget_size_request(GTK_WIDGET(window), &requisition);
gtk_widget_set_size_request(
GTK_WIDGET(window),
width == -1 ? -1 : std::max(width, requisition.width),
height == -1 ? -1 : std::max(height, requisition.height));
}
gtk_window_set_resizable(window, resizable ? TRUE : FALSE);
}
void CenterOverWindow(GtkWindow* window, GtkWindow* parent) {
gfx::Rect frame_bounds = gtk_util::GetWidgetScreenBounds(GTK_WIDGET(parent));
gfx::Point origin = frame_bounds.origin();
gfx::Size size = gtk_util::GetWidgetSize(GTK_WIDGET(window));
origin.Offset(
(frame_bounds.width() - size.width()) / 2,
(frame_bounds.height() - size.height()) / 2);
// Prevent moving window out of monitor bounds.
GdkScreen* screen = gtk_window_get_screen(parent);
if (screen) {
// It would be better to check against workarea for given monitor
// but getting workarea for particular monitor is tricky.
gint monitor = gdk_screen_get_monitor_at_window(screen,
GTK_WIDGET(parent)->window);
GdkRectangle rect;
gdk_screen_get_monitor_geometry(screen, monitor, &rect);
// Check the right bottom corner.
if (origin.x() > rect.x + rect.width - size.width())
origin.set_x(rect.x + rect.width - size.width());
if (origin.y() > rect.y + rect.height - size.height())
origin.set_y(rect.y + rect.height - size.height());
// Check the left top corner.
if (origin.x() < rect.x)
origin.set_x(rect.x);
if (origin.y() < rect.y)
origin.set_y(rect.y);
}
gtk_window_move(window, origin.x(), origin.y());
// Move to user expected desktop if window is already visible.
if (GTK_WIDGET(window)->window) {
ui::ChangeWindowDesktop(
ui::GetX11WindowFromGtkWidget(GTK_WIDGET(window)),
ui::GetX11WindowFromGtkWidget(GTK_WIDGET(parent)));
}
}
void MakeAppModalWindowGroup() {
#if GTK_CHECK_VERSION(2, 14, 0)
// Older versions of GTK+ don't give us gtk_window_group_list() which is what
// we need to add current non-browser modal dialogs to the list. If
// we have 2.14+ we can do things the correct way.
GtkWindowGroup* window_group = gtk_window_group_new();
for (BrowserList::const_iterator it = BrowserList::begin();
it != BrowserList::end(); ++it) {
// List all windows in this current group
GtkWindowGroup* old_group =
gtk_window_get_group((*it)->window()->GetNativeHandle());
GList* all_windows = gtk_window_group_list_windows(old_group);
for (GList* window = all_windows; window; window = window->next) {
gtk_window_group_add_window(window_group, GTK_WINDOW(window->data));
}
g_list_free(all_windows);
}
g_object_unref(window_group);
#else
// Otherwise just grab all browser windows and be slightly broken.
GtkWindowGroup* window_group = gtk_window_group_new();
for (BrowserList::const_iterator it = BrowserList::begin();
it != BrowserList::end(); ++it) {
gtk_window_group_add_window(window_group,
(*it)->window()->GetNativeHandle());
}
g_object_unref(window_group);
#endif
}
void AppModalDismissedUngroupWindows() {
#if GTK_CHECK_VERSION(2, 14, 0)
if (BrowserList::begin() != BrowserList::end()) {
std::vector<GtkWindow*> transient_windows;
// All windows should be part of one big modal group right now.
GtkWindowGroup* window_group = gtk_window_get_group(
(*BrowserList::begin())->window()->GetNativeHandle());
GList* windows = gtk_window_group_list_windows(window_group);
for (GList* item = windows; item; item = item->next) {
GtkWindow* window = GTK_WINDOW(item->data);
GtkWindow* transient_for = gtk_window_get_transient_for(window);
if (transient_for) {
transient_windows.push_back(window);
} else {
GtkWindowGroup* window_group = gtk_window_group_new();
gtk_window_group_add_window(window_group, window);
g_object_unref(window_group);
}
}
// Put each transient window in the same group as its transient parent.
for (std::vector<GtkWindow*>::iterator it = transient_windows.begin();
it != transient_windows.end(); ++it) {
GtkWindow* transient_parent = gtk_window_get_transient_for(*it);
GtkWindowGroup* group = gtk_window_get_group(transient_parent);
gtk_window_group_add_window(group, *it);
}
}
#else
// This is slightly broken in the case where a different window had a dialog,
// but its the best we can do since we don't have newer gtk stuff.
for (BrowserList::const_iterator it = BrowserList::begin();
it != BrowserList::end(); ++it) {
GtkWindowGroup* window_group = gtk_window_group_new();
gtk_window_group_add_window(window_group,
(*it)->window()->GetNativeHandle());
g_object_unref(window_group);
}
#endif
}
void RemoveAllChildren(GtkWidget* container) {
gtk_container_foreach(GTK_CONTAINER(container), RemoveWidget, container);
}
void ForceFontSizePixels(GtkWidget* widget, double size_pixels) {
GtkStyle* style = widget->style;
PangoFontDescription* font_desc = style->font_desc;
// pango_font_description_set_absolute_size sets the font size in device
// units, which for us is pixels.
pango_font_description_set_absolute_size(font_desc,
PANGO_SCALE * size_pixels);
gtk_widget_modify_font(widget, font_desc);
}
void UndoForceFontSize(GtkWidget* widget) {
gtk_widget_modify_font(widget, NULL);
}
gfx::Point GetWidgetScreenPosition(GtkWidget* widget) {
if (!widget->window) {
NOTREACHED() << "Must only be called on realized widgets.";
return gfx::Point(0, 0);
}
gint x, y;
gdk_window_get_origin(widget->window, &x, &y);
if (GTK_WIDGET_NO_WINDOW(widget)) {
x += widget->allocation.x;
y += widget->allocation.y;
}
return gfx::Point(x, y);
}
gfx::Rect GetWidgetScreenBounds(GtkWidget* widget) {
gfx::Point position = GetWidgetScreenPosition(widget);
return gfx::Rect(position.x(), position.y(),
widget->allocation.width, widget->allocation.height);
}
gfx::Size GetWidgetSize(GtkWidget* widget) {
GtkRequisition size;
gtk_widget_size_request(widget, &size);
return gfx::Size(size.width, size.height);
}
void ConvertWidgetPointToScreen(GtkWidget* widget, gfx::Point* p) {
DCHECK(widget);
DCHECK(p);
gfx::Point position = GetWidgetScreenPosition(widget);
p->SetPoint(p->x() + position.x(), p->y() + position.y());
}
void InitRCStyles() {
static const char kRCText[] =
// Make our dialogs styled like the GNOME HIG.
//
// TODO(evanm): content-area-spacing was introduced in a later
// version of GTK, so we need to set that manually on all dialogs.
// Perhaps it would make sense to have a shared FixupDialog() function.
"style \"gnome-dialog\" {\n"
" xthickness = 12\n"
" GtkDialog::action-area-border = 0\n"
" GtkDialog::button-spacing = 6\n"
" GtkDialog::content-area-spacing = 18\n"
" GtkDialog::content-area-border = 12\n"
"}\n"
// Note we set it at the "application" priority, so users can override.
"widget \"GtkDialog\" style : application \"gnome-dialog\"\n"
// Make our about dialog special, so the image is flush with the edge.
"style \"about-dialog\" {\n"
" GtkDialog::action-area-border = 12\n"
" GtkDialog::button-spacing = 6\n"
" GtkDialog::content-area-spacing = 18\n"
" GtkDialog::content-area-border = 0\n"
"}\n"
"widget \"about-dialog\" style : application \"about-dialog\"\n";
gtk_rc_parse_string(kRCText);
}
GtkWidget* CenterWidgetInHBox(GtkWidget* hbox, GtkWidget* widget,
bool pack_at_end, int padding) {
GtkWidget* centering_vbox = gtk_vbox_new(FALSE, 0);
gtk_box_pack_start(GTK_BOX(centering_vbox), widget, TRUE, FALSE, 0);
if (pack_at_end)
gtk_box_pack_end(GTK_BOX(hbox), centering_vbox, FALSE, FALSE, padding);
else
gtk_box_pack_start(GTK_BOX(hbox), centering_vbox, FALSE, FALSE, padding);
return centering_vbox;
}
bool IsScreenComposited() {
GdkScreen* screen = gdk_screen_get_default();
return gdk_screen_is_composited(screen) == TRUE;
}
void EnumerateTopLevelWindows(ui::EnumerateWindowsDelegate* delegate) {
std::vector<XID> stack;
if (!ui::GetXWindowStack(ui::GetX11RootWindow(), &stack)) {
// Window Manager doesn't support _NET_CLIENT_LIST_STACKING, so fall back
// to old school enumeration of all X windows. Some WMs parent 'top-level'
// windows in unnamed actual top-level windows (ion WM), so extend the
// search depth to all children of top-level windows.
const int kMaxSearchDepth = 1;
ui::EnumerateAllWindows(delegate, kMaxSearchDepth);
return;
}
std::vector<XID>::iterator iter;
for (iter = stack.begin(); iter != stack.end(); iter++) {
if (delegate->ShouldStopIterating(*iter))
return;
}
}
void SetButtonClickableByMouseButtons(GtkWidget* button,
bool left, bool middle, bool right) {
gint button_mask = 0;
if (left)
button_mask |= 1 << 1;
if (middle)
button_mask |= 1 << 2;
if (right)
button_mask |= 1 << 3;
void* userdata = GINT_TO_POINTER(button_mask);
g_signal_connect(button, "button-press-event",
G_CALLBACK(OnMouseButtonPressed), userdata);
g_signal_connect(button, "button-release-event",
G_CALLBACK(OnMouseButtonReleased), userdata);
}
void SetButtonTriggersNavigation(GtkWidget* button) {
SetButtonClickableByMouseButtons(button, true, true, false);
}
int MirroredLeftPointForRect(GtkWidget* widget, const gfx::Rect& bounds) {
if (!base::i18n::IsRTL())
return bounds.x();
return widget->allocation.width - bounds.x() - bounds.width();
}
int MirroredXCoordinate(GtkWidget* widget, int x) {
if (base::i18n::IsRTL())
return widget->allocation.width - x;
return x;
}
bool WidgetContainsCursor(GtkWidget* widget) {
gint x = 0;
gint y = 0;
gtk_widget_get_pointer(widget, &x, &y);
return WidgetBounds(widget).Contains(x, y);
}
void SetWindowIcon(GtkWindow* window) {
GList* icon_list = GetIconList();
gtk_window_set_icon_list(window, icon_list);
g_list_free(icon_list);
}
void SetDefaultWindowIcon() {
GList* icon_list = GetIconList();
gtk_window_set_default_icon_list(icon_list);
g_list_free(icon_list);
}
GtkWidget* AddButtonToDialog(GtkWidget* dialog, const gchar* text,
const gchar* stock_id, gint response_id) {
GtkWidget* button = gtk_button_new_with_label(text);
gtk_button_set_image(GTK_BUTTON(button),
gtk_image_new_from_stock(stock_id,
GTK_ICON_SIZE_BUTTON));
gtk_dialog_add_action_widget(GTK_DIALOG(dialog), button,
response_id);
return button;
}
GtkWidget* BuildDialogButton(GtkWidget* dialog, int ids_id,
const gchar* stock_id) {
GtkWidget* button = gtk_button_new_with_mnemonic(
gfx::ConvertAcceleratorsFromWindowsStyle(
l10n_util::GetStringUTF8(ids_id)).c_str());
gtk_button_set_image(GTK_BUTTON(button),
gtk_image_new_from_stock(stock_id,
GTK_ICON_SIZE_BUTTON));
return button;
}
GtkWidget* CreateEntryImageHBox(GtkWidget* entry, GtkWidget* image) {
GtkWidget* hbox = gtk_hbox_new(FALSE, gtk_util::kControlSpacing);
gtk_box_pack_start(GTK_BOX(hbox), entry, TRUE, TRUE, 0);
gtk_box_pack_start(GTK_BOX(hbox), image, FALSE, FALSE, 0);
return hbox;
}
void SetLabelColor(GtkWidget* label, const GdkColor* color) {
gtk_widget_modify_fg(label, GTK_STATE_NORMAL, color);
gtk_widget_modify_fg(label, GTK_STATE_ACTIVE, color);
gtk_widget_modify_fg(label, GTK_STATE_PRELIGHT, color);
gtk_widget_modify_fg(label, GTK_STATE_INSENSITIVE, color);
}
GtkWidget* IndentWidget(GtkWidget* content) {
GtkWidget* content_alignment = gtk_alignment_new(0.0, 0.5, 1.0, 1.0);
gtk_alignment_set_padding(GTK_ALIGNMENT(content_alignment), 0, 0,
gtk_util::kGroupIndent, 0);
gtk_container_add(GTK_CONTAINER(content_alignment), content);
return content_alignment;
}
void UpdateGtkFontSettings(RendererPreferences* prefs) {
DCHECK(prefs);
// From http://library.gnome.org/devel/gtk/unstable/GtkSettings.html, this is
// the default value for gtk-cursor-blink-time.
static const gint kGtkDefaultCursorBlinkTime = 1200;
gint cursor_blink_time = kGtkDefaultCursorBlinkTime;
gboolean cursor_blink = TRUE;
gint antialias = 0;
gint hinting = 0;
gchar* hint_style = NULL;
gchar* rgba_style = NULL;
g_object_get(gtk_settings_get_default(),
"gtk-cursor-blink-time", &cursor_blink_time,
"gtk-cursor-blink", &cursor_blink,
"gtk-xft-antialias", &antialias,
"gtk-xft-hinting", &hinting,
"gtk-xft-hintstyle", &hint_style,
"gtk-xft-rgba", &rgba_style,
NULL);
// Set some reasonable defaults.
prefs->should_antialias_text = true;
prefs->hinting = RENDERER_PREFERENCES_HINTING_SYSTEM_DEFAULT;
prefs->subpixel_rendering =
RENDERER_PREFERENCES_SUBPIXEL_RENDERING_SYSTEM_DEFAULT;
if (cursor_blink) {
// Dividing by 2*1000ms follows the WebKit GTK port and makes the blink
// frequency appear similar to the omnibox. Without this the blink is too
// slow.
prefs->caret_blink_interval = cursor_blink_time / 2000.;
} else {
prefs->caret_blink_interval = 0;
}
// g_object_get() doesn't tell us whether the properties were present or not,
// but if they aren't (because gnome-settings-daemon isn't running), we'll get
// NULL values for the strings.
if (hint_style && rgba_style) {
prefs->should_antialias_text = antialias;
if (hinting == 0 || strcmp(hint_style, "hintnone") == 0) {
prefs->hinting = RENDERER_PREFERENCES_HINTING_NONE;
} else if (strcmp(hint_style, "hintslight") == 0) {
prefs->hinting = RENDERER_PREFERENCES_HINTING_SLIGHT;
} else if (strcmp(hint_style, "hintmedium") == 0) {
prefs->hinting = RENDERER_PREFERENCES_HINTING_MEDIUM;
} else if (strcmp(hint_style, "hintfull") == 0) {
prefs->hinting = RENDERER_PREFERENCES_HINTING_FULL;
}
if (strcmp(rgba_style, "none") == 0) {
prefs->subpixel_rendering = RENDERER_PREFERENCES_SUBPIXEL_RENDERING_NONE;
} else if (strcmp(rgba_style, "rgb") == 0) {
prefs->subpixel_rendering = RENDERER_PREFERENCES_SUBPIXEL_RENDERING_RGB;
} else if (strcmp(rgba_style, "bgr") == 0) {
prefs->subpixel_rendering = RENDERER_PREFERENCES_SUBPIXEL_RENDERING_BGR;
} else if (strcmp(rgba_style, "vrgb") == 0) {
prefs->subpixel_rendering = RENDERER_PREFERENCES_SUBPIXEL_RENDERING_VRGB;
} else if (strcmp(rgba_style, "vbgr") == 0) {
prefs->subpixel_rendering = RENDERER_PREFERENCES_SUBPIXEL_RENDERING_VBGR;
}
}
if (hint_style)
g_free(hint_style);
if (rgba_style)
g_free(rgba_style);
}
gfx::Point ScreenPoint(GtkWidget* widget) {
int x, y;
gdk_display_get_pointer(gtk_widget_get_display(widget), NULL, &x, &y,
NULL);
return gfx::Point(x, y);
}
gfx::Point ClientPoint(GtkWidget* widget) {
int x, y;
gtk_widget_get_pointer(widget, &x, &y);
return gfx::Point(x, y);
}
GdkPoint MakeBidiGdkPoint(gint x, gint y, gint width, bool ltr) {
GdkPoint point = {ltr ? x : width - x, y};
return point;
}
void DrawTextEntryBackground(GtkWidget* offscreen_entry,
GtkWidget* widget_to_draw_on,
GdkRectangle* dirty_rec,
GdkRectangle* rec) {
GtkStyle* gtk_owned_style = gtk_rc_get_style(offscreen_entry);
// GTK owns the above and we're going to have to make our own copy of it
// that we can edit.
GtkStyle* our_style = gtk_style_copy(gtk_owned_style);
our_style = gtk_style_attach(our_style, widget_to_draw_on->window);
// TODO(erg): Draw the focus ring if appropriate...
// We're using GTK rendering; draw a GTK entry widget onto the background.
gtk_paint_shadow(our_style, widget_to_draw_on->window,
GTK_STATE_NORMAL, GTK_SHADOW_IN, dirty_rec,
widget_to_draw_on, "entry",
rec->x, rec->y, rec->width, rec->height);
// Draw the interior background (not all themes draw the entry background
// above; this is a noop on themes that do).
gint xborder = our_style->xthickness;
gint yborder = our_style->ythickness;
gint width = rec->width - 2 * xborder;
gint height = rec->height - 2 * yborder;
if (width > 0 && height > 0) {
gtk_paint_flat_box(our_style, widget_to_draw_on->window,
GTK_STATE_NORMAL, GTK_SHADOW_NONE, dirty_rec,
widget_to_draw_on, "entry_bg",
rec->x + xborder, rec->y + yborder,
width, height);
}
gtk_style_detach(our_style);
g_object_unref(our_style);
}
void DrawThemedToolbarBackground(GtkWidget* widget,
cairo_t* cr,
GdkEventExpose* event,
const gfx::Point& tabstrip_origin,
GtkThemeProvider* theme_provider) {
// Fill the entire region with the toolbar color.
GdkColor color = theme_provider->GetGdkColor(
BrowserThemeProvider::COLOR_TOOLBAR);
gdk_cairo_set_source_color(cr, &color);
cairo_fill(cr);
// The toolbar is supposed to blend in with the active tab, so we have to pass
// coordinates for the IDR_THEME_TOOLBAR bitmap relative to the top of the
// tab strip.
CairoCachedSurface* background = theme_provider->GetSurfaceNamed(
IDR_THEME_TOOLBAR, widget);
background->SetSource(cr, tabstrip_origin.x(), tabstrip_origin.y());
// We tile the toolbar background in both directions.
cairo_pattern_set_extend(cairo_get_source(cr), CAIRO_EXTEND_REPEAT);
cairo_rectangle(cr,
tabstrip_origin.x(),
tabstrip_origin.y(),
event->area.x + event->area.width - tabstrip_origin.x(),
event->area.y + event->area.height - tabstrip_origin.y());
cairo_fill(cr);
}
GdkColor AverageColors(GdkColor color_one, GdkColor color_two) {
GdkColor average_color;
average_color.pixel = 0;
average_color.red = (color_one.red + color_two.red) / 2;
average_color.green = (color_one.green + color_two.green) / 2;
average_color.blue = (color_one.blue + color_two.blue) / 2;
return average_color;
}
void SetAlwaysShowImage(GtkWidget* image_menu_item) {
// Compile time check: if it's available, just use the API.
// GTK_CHECK_VERSION is TRUE if the passed version is compatible.
#if GTK_CHECK_VERSION(2, 16, 1)
gtk_image_menu_item_set_always_show_image(
GTK_IMAGE_MENU_ITEM(image_menu_item), TRUE);
#else
// Run time check: if the API is not available, set the property manually.
// This will still only work with GTK 2.16+ as the property doesn't exist
// in earlier versions.
// gtk_check_version() returns NULL if the passed version is compatible.
if (!gtk_check_version(2, 16, 1)) {
GValue true_value = { 0 };
g_value_init(&true_value, G_TYPE_BOOLEAN);
g_value_set_boolean(&true_value, TRUE);
g_object_set_property(G_OBJECT(image_menu_item), "always-show-image",
&true_value);
}
#endif
}
void StackPopupWindow(GtkWidget* popup, GtkWidget* toplevel) {
DCHECK(GTK_IS_WINDOW(popup) && GTK_WIDGET_TOPLEVEL(popup) &&
GTK_WIDGET_REALIZED(popup));
DCHECK(GTK_IS_WINDOW(toplevel) && GTK_WIDGET_TOPLEVEL(toplevel) &&
GTK_WIDGET_REALIZED(toplevel));
// Stack the |popup| window directly above the |toplevel| window.
// The popup window is a direct child of the root window, so we need to
// find a similar ancestor for the toplevel window (which might have been
// reparented by a window manager). We grab the server while we're doing
// this -- otherwise, we'll get an error if the window manager reparents the
// toplevel window right after we call GetHighestAncestorWindow().
gdk_x11_display_grab(gtk_widget_get_display(toplevel));
XID toplevel_window_base = ui::GetHighestAncestorWindow(
ui::GetX11WindowFromGtkWidget(toplevel),
ui::GetX11RootWindow());
if (toplevel_window_base) {
XID window_xid = ui::GetX11WindowFromGtkWidget(popup);
XID window_parent = ui::GetParentWindow(window_xid);
if (window_parent == ui::GetX11RootWindow()) {
ui::RestackWindow(window_xid, toplevel_window_base, true);
} else {
// The window manager shouldn't reparent override-redirect windows.
DLOG(ERROR) << "override-redirect window " << window_xid
<< "'s parent is " << window_parent
<< ", rather than root window "
<< ui::GetX11RootWindow();
}
}
gdk_x11_display_ungrab(gtk_widget_get_display(toplevel));
}
gfx::Rect GetWidgetRectRelativeToToplevel(GtkWidget* widget) {
DCHECK(GTK_WIDGET_REALIZED(widget));
GtkWidget* toplevel = gtk_widget_get_toplevel(widget);
DCHECK(toplevel);
DCHECK(GTK_WIDGET_REALIZED(toplevel));
gint x = 0, y = 0;
gtk_widget_translate_coordinates(widget,
toplevel,
0, 0,
&x, &y);
return gfx::Rect(x, y, widget->allocation.width, widget->allocation.height);
}
void SuppressDefaultPainting(GtkWidget* container) {
g_signal_connect(container, "expose-event",
G_CALLBACK(PaintNoBackground), NULL);
}
WindowOpenDisposition DispositionForCurrentButtonPressEvent() {
GdkEvent* event = gtk_get_current_event();
if (!event) {
NOTREACHED();
return NEW_FOREGROUND_TAB;
}
guint state = event->button.state;
gdk_event_free(event);
return event_utils::DispositionFromEventFlags(state);
}
bool GrabAllInput(GtkWidget* widget) {
guint time = gtk_get_current_event_time();
if (!GTK_WIDGET_VISIBLE(widget))
return false;
if (!gdk_pointer_grab(widget->window, TRUE,
GdkEventMask(GDK_BUTTON_PRESS_MASK |
GDK_BUTTON_RELEASE_MASK |
GDK_ENTER_NOTIFY_MASK |
GDK_LEAVE_NOTIFY_MASK |
GDK_POINTER_MOTION_MASK),
NULL, NULL, time) == 0) {
return false;
}
if (!gdk_keyboard_grab(widget->window, TRUE, time) == 0) {
gdk_display_pointer_ungrab(gdk_drawable_get_display(widget->window), time);
return false;
}
gtk_grab_add(widget);
return true;
}
gfx::Rect WidgetBounds(GtkWidget* widget) {
// To quote the gtk docs:
//
// Widget coordinates are a bit odd; for historical reasons, they are
// defined as widget->window coordinates for widgets that are not
// GTK_NO_WINDOW widgets, and are relative to widget->allocation.x,
// widget->allocation.y for widgets that are GTK_NO_WINDOW widgets.
//
// So the base is always (0,0).
return gfx::Rect(0, 0, widget->allocation.width, widget->allocation.height);
}
void SetWMLastUserActionTime(GtkWindow* window) {
gdk_x11_window_set_user_time(GTK_WIDGET(window)->window, XTimeNow());
}
guint32 XTimeNow() {
struct timespec ts;
clock_gettime(CLOCK_MONOTONIC, &ts);
return ts.tv_sec * 1000 + ts.tv_nsec / 1000000;
}
bool URLFromPrimarySelection(Profile* profile, GURL* url) {
GtkClipboard* clipboard = gtk_clipboard_get(GDK_SELECTION_PRIMARY);
DCHECK(clipboard);
gchar* selection_text = gtk_clipboard_wait_for_text(clipboard);
if (!selection_text)
return false;
// Use autocomplete to clean up the text, going so far as to turn it into
// a search query if necessary.
AutocompleteMatch match;
profile->GetAutocompleteClassifier()->Classify(UTF8ToUTF16(selection_text),
string16(), false, &match, NULL);
g_free(selection_text);
if (!match.destination_url.is_valid())
return false;
*url = match.destination_url;
return true;
}
bool AddWindowAlphaChannel(GtkWidget* window) {
GdkScreen* screen = gtk_widget_get_screen(window);
GdkColormap* rgba = gdk_screen_get_rgba_colormap(screen);
if (rgba)
gtk_widget_set_colormap(window, rgba);
return rgba;
}
void GetTextColors(GdkColor* normal_base,
GdkColor* selected_base,
GdkColor* normal_text,
GdkColor* selected_text) {
GtkWidget* fake_entry = gtk_entry_new();
GtkStyle* style = gtk_rc_get_style(fake_entry);
if (normal_base)
*normal_base = style->base[GTK_STATE_NORMAL];
if (selected_base)
*selected_base = style->base[GTK_STATE_SELECTED];
if (normal_text)
*normal_text = style->text[GTK_STATE_NORMAL];
if (selected_text)
*selected_text = style->text[GTK_STATE_SELECTED];
g_object_ref_sink(fake_entry);
g_object_unref(fake_entry);
}
#if defined(OS_CHROMEOS)
GtkWindow* GetLastActiveBrowserWindow() {
if (Browser* b = BrowserList::GetLastActive()) {
if (b->type() != Browser::TYPE_NORMAL) {
b = BrowserList::FindBrowserWithType(b->profile(),
Browser::TYPE_NORMAL,
true);
}
if (b)
return GTK_WINDOW(b->window()->GetNativeHandle());
}
return NULL;
}
GtkWindow* GetDialogTransientParent(GtkWindow* dialog) {
GtkWindow* parent = gtk_window_get_transient_for(dialog);
if (!parent)
parent = GetLastActiveBrowserWindow();
return parent;
}
void ShowDialog(GtkWidget* dialog) {
// Make sure all controls are visible so that we get correct size.
gtk_widget_show_all(GTK_DIALOG(dialog)->vbox);
// Get dialog window size.
gint width = 0;
gint height = 0;
gtk_window_get_size(GTK_WINDOW(dialog), &width, &height);
chromeos::ShowNativeDialog(GetDialogTransientParent(GTK_WINDOW(dialog)),
dialog,
gtk_window_get_resizable(GTK_WINDOW(dialog)) ?
chromeos::DIALOG_FLAG_RESIZEABLE :
chromeos::DIALOG_FLAG_DEFAULT,
gfx::Size(width, height),
gfx::Size());
}
void ShowDialogWithLocalizedSize(GtkWidget* dialog,
int width_id,
int height_id,
bool resizeable) {
int width = (width_id == -1) ? 0 :
views::Window::GetLocalizedContentsWidth(width_id);
int height = (height_id == -1) ? 0 :
views::Window::GetLocalizedContentsHeight(height_id);
chromeos::ShowNativeDialog(GetDialogTransientParent(GTK_WINDOW(dialog)),
dialog,
resizeable ? chromeos::DIALOG_FLAG_RESIZEABLE :
chromeos::DIALOG_FLAG_DEFAULT,
gfx::Size(width, height),
gfx::Size());
}
void ShowModalDialogWithMinLocalizedWidth(GtkWidget* dialog,
int width_id) {
int width = (width_id == -1) ? 0 :
views::Window::GetLocalizedContentsWidth(width_id);
chromeos::ShowNativeDialog(GetDialogTransientParent(GTK_WINDOW(dialog)),
dialog,
chromeos::DIALOG_FLAG_MODAL,
gfx::Size(),
gfx::Size(width, 0));
}
void PresentWindow(GtkWidget* window, int timestamp) {
GtkWindow* host_window = chromeos::GetNativeDialogWindow(window);
if (!host_window)
host_window = GTK_WINDOW(window);
if (timestamp)
gtk_window_present_with_time(host_window, timestamp);
else
gtk_window_present(host_window);
}
GtkWindow* GetDialogWindow(GtkWidget* dialog) {
return chromeos::GetNativeDialogWindow(dialog);
}
gfx::Rect GetDialogBounds(GtkWidget* dialog) {
return chromeos::GetNativeDialogContentsBounds(dialog);
}
#else
void ShowDialog(GtkWidget* dialog) {
gtk_widget_show_all(dialog);
}
void ShowDialogWithLocalizedSize(GtkWidget* dialog,
int width_id,
int height_id,
bool resizeable) {
gtk_widget_realize(dialog);
SetWindowSizeFromResources(GTK_WINDOW(dialog),
width_id,
height_id,
resizeable);
gtk_widget_show_all(dialog);
}
void ShowModalDialogWithMinLocalizedWidth(GtkWidget* dialog,
int width_id) {
gtk_widget_show_all(dialog);
// Suggest a minimum size.
gint width;
GtkRequisition req;
gtk_widget_size_request(dialog, &req);
gtk_util::GetWidgetSizeFromResources(dialog, width_id, 0, &width, NULL);
if (width > req.width)
gtk_widget_set_size_request(dialog, width, -1);
}
void PresentWindow(GtkWidget* window, int timestamp) {
if (timestamp)
gtk_window_present_with_time(GTK_WINDOW(window), timestamp);
else
gtk_window_present(GTK_WINDOW(window));
}
GtkWindow* GetDialogWindow(GtkWidget* dialog) {
return GTK_WINDOW(dialog);
}
gfx::Rect GetDialogBounds(GtkWidget* dialog) {
gint x = 0, y = 0, width = 1, height = 1;
gtk_window_get_position(GTK_WINDOW(dialog), &x, &y);
gtk_window_get_size(GTK_WINDOW(dialog), &width, &height);
return gfx::Rect(x, y, width, height);
}
#endif
string16 GetStockPreferencesMenuLabel() {
GtkStockItem stock_item;
string16 preferences;
if (gtk_stock_lookup(GTK_STOCK_PREFERENCES, &stock_item)) {
const char16 kUnderscore[] = { '_', 0 };
RemoveChars(UTF8ToUTF16(stock_item.label), kUnderscore, &preferences);
}
return preferences;
}
bool IsWidgetAncestryVisible(GtkWidget* widget) {
GtkWidget* parent = widget;
while (parent && GTK_WIDGET_VISIBLE(parent))
parent = parent->parent;
return !parent;
}
void SetGtkFont(const std::string& font_name) {
g_object_set(gtk_settings_get_default(),
"gtk-font-name", font_name.c_str(), NULL);
}
void SetLabelWidth(GtkWidget* label, int pixel_width) {
gtk_label_set_line_wrap(GTK_LABEL(label), TRUE);
gtk_misc_set_alignment(GTK_MISC(label), 0, 0.5);
// Do the simple thing in LTR because the bug only affects right-aligned
// text. Also, when using the workaround, the label tries to maintain
// uniform line-length, which we don't really want.
if (gtk_widget_get_direction(label) == GTK_TEXT_DIR_LTR) {
gtk_widget_set_size_request(label, pixel_width, -1);
} else {
// The label has to be realized before we can adjust its width.
if (GTK_WIDGET_REALIZED(label)) {
OnLabelRealize(label, GINT_TO_POINTER(pixel_width));
} else {
g_signal_connect(label, "realize", G_CALLBACK(OnLabelRealize),
GINT_TO_POINTER(pixel_width));
}
}
}
void InitLabelSizeRequestAndEllipsizeMode(GtkWidget* label) {
GtkRequisition size;
gtk_label_set_ellipsize(GTK_LABEL(label), PANGO_ELLIPSIZE_NONE);
gtk_widget_set_size_request(label, -1, -1);
gtk_widget_size_request(label, &size);
gtk_widget_set_size_request(label, size.width, size.height);
gtk_label_set_ellipsize(GTK_LABEL(label), PANGO_ELLIPSIZE_END);
}
GdkDragAction WebDragOpToGdkDragAction(WebDragOperationsMask op) {
GdkDragAction action = static_cast<GdkDragAction>(0);
if (op & WebDragOperationCopy)
action = static_cast<GdkDragAction>(action | GDK_ACTION_COPY);
if (op & WebDragOperationLink)
action = static_cast<GdkDragAction>(action | GDK_ACTION_LINK);
if (op & WebDragOperationMove)
action = static_cast<GdkDragAction>(action | GDK_ACTION_MOVE);
return action;
}
WebDragOperationsMask GdkDragActionToWebDragOp(GdkDragAction action) {
WebDragOperationsMask op = WebDragOperationNone;
if (action & GDK_ACTION_COPY)
op = static_cast<WebDragOperationsMask>(op | WebDragOperationCopy);
if (action & GDK_ACTION_LINK)
op = static_cast<WebDragOperationsMask>(op | WebDragOperationLink);
if (action & GDK_ACTION_MOVE)
op = static_cast<WebDragOperationsMask>(op | WebDragOperationMove);
return op;
}
void ApplyMessageDialogQuirks(GtkWidget* dialog) {
if (gtk_window_get_modal(GTK_WINDOW(dialog))) {
// Work around a KDE 3 window manager bug.
scoped_ptr<base::Environment> env(base::Environment::Create());
if (base::nix::DESKTOP_ENVIRONMENT_KDE3 ==
base::nix::GetDesktopEnvironment(env.get()))
gtk_window_set_skip_taskbar_hint(GTK_WINDOW(dialog), FALSE);
}
}
// Performs Cut/Copy/Paste operation on the |window|.
// If the current render view is focused, then just call the specified |method|
// against the current render view host, otherwise emit the specified |signal|
// against the focused widget.
// TODO(suzhe): This approach does not work for plugins.
void DoCutCopyPaste(BrowserWindow* window,
void (RenderViewHost::*method)(),
const char* signal) {
GtkWidget* widget = GetBrowserWindowFocusedWidget(window);
if (widget == NULL)
return; // Do nothing if no focused widget.
TabContents* current_tab = GetBrowserWindowSelectedTabContents(window);
if (current_tab && widget == current_tab->GetContentNativeView()) {
(current_tab->render_view_host()->*method)();
} else {
guint id;
if ((id = g_signal_lookup(signal, G_OBJECT_TYPE(widget))) != 0)
g_signal_emit(widget, id, 0);
}
}
void DoCut(BrowserWindow* window) {
DoCutCopyPaste(window, &RenderViewHost::Cut, "cut-clipboard");
}
void DoCopy(BrowserWindow* window) {
DoCutCopyPaste(window, &RenderViewHost::Copy, "copy-clipboard");
}
void DoPaste(BrowserWindow* window) {
DoCutCopyPaste(window, &RenderViewHost::Paste, "paste-clipboard");
}
} // namespace gtk_util