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gtk_ui.cc
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gtk_ui.cc
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// Copyright (c) 2012 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 "ui/gtk/gtk_ui.h"
#include <cairo.h>
#include <gdk/gdk.h>
#include <gdk/gdkkeysyms.h>
#include <pango/pango.h>
#include <cmath>
#include <memory>
#include <set>
#include <utility>
#include "base/command_line.h"
#include "base/containers/flat_map.h"
#include "base/debug/leak_annotations.h"
#include "base/environment.h"
#include "base/logging.h"
#include "base/nix/mime_util_xdg.h"
#include "base/nix/xdg_util.h"
#include "base/stl_util.h"
#include "base/strings/string_split.h"
#include "base/strings/stringprintf.h"
#include "chrome/browser/themes/theme_properties.h" // nogncheck
#include "printing/buildflags/buildflags.h"
#include "third_party/skia/include/core/SkBitmap.h"
#include "third_party/skia/include/core/SkCanvas.h"
#include "third_party/skia/include/core/SkColor.h"
#include "third_party/skia/include/core/SkShader.h"
#include "ui/base/cursor/cursor_theme_manager_observer.h"
#include "ui/base/glib/glib_cast.h"
#include "ui/base/ime/linux/fake_input_method_context.h"
#include "ui/base/ime/linux/linux_input_method_context.h"
#include "ui/base/ime/linux/linux_input_method_context_factory.h"
#include "ui/display/display.h"
#include "ui/events/keycodes/dom/dom_code.h"
#include "ui/events/keycodes/dom/dom_keyboard_layout_manager.h"
#include "ui/events/keycodes/dom/keycode_converter.h"
#include "ui/gfx/canvas.h"
#include "ui/gfx/font_render_params.h"
#include "ui/gfx/geometry/rect.h"
#include "ui/gfx/geometry/size.h"
#include "ui/gfx/image/image.h"
#include "ui/gfx/image/image_skia_source.h"
#include "ui/gfx/skbitmap_operations.h"
#include "ui/gfx/skia_util.h"
#include "ui/gtk/gtk_compat.h"
#include "ui/gtk/gtk_key_bindings_handler.h"
#include "ui/gtk/gtk_ui_delegate.h"
#include "ui/gtk/gtk_util.h"
#include "ui/gtk/input_method_context_impl_gtk.h"
#include "ui/gtk/native_theme_gtk.h"
#include "ui/gtk/nav_button_provider_gtk.h"
#include "ui/gtk/printing/print_dialog_gtk.h"
#include "ui/gtk/printing/printing_gtk_util.h"
#include "ui/gtk/select_file_dialog_impl.h"
#include "ui/gtk/settings_provider_gtk.h"
#include "ui/native_theme/native_theme.h"
#include "ui/shell_dialogs/select_file_policy.h"
#include "ui/views/controls/button/button.h"
#include "ui/views/controls/button/label_button.h"
#include "ui/views/controls/button/label_button_border.h"
#include "ui/views/linux_ui/device_scale_factor_observer.h"
#include "ui/views/linux_ui/nav_button_provider.h"
#include "ui/views/linux_ui/window_button_order_observer.h"
#if defined(USE_GIO)
#include "ui/gtk/settings_provider_gsettings.h"
#endif
#if defined(USE_OZONE)
#include "ui/base/ime/input_method.h"
#include "ui/base/ui_base_features.h"
#include "ui/ozone/public/ozone_platform.h"
#endif
#if BUILDFLAG(ENABLE_PRINTING)
#include "printing/printing_context_linux.h"
#endif
namespace gtk {
namespace {
// Stores the GtkUi singleton instance
const GtkUi* g_gtk_ui = nullptr;
const double kDefaultDPI = 96;
class GtkButtonImageSource : public gfx::ImageSkiaSource {
public:
GtkButtonImageSource(bool focus,
views::Button::ButtonState button_state,
gfx::Size size)
: focus_(focus), width_(size.width()), height_(size.height()) {
switch (button_state) {
case views::Button::ButtonState::STATE_NORMAL:
state_ = ui::NativeTheme::kNormal;
break;
case views::Button::ButtonState::STATE_HOVERED:
state_ = ui::NativeTheme::kHovered;
break;
case views::Button::ButtonState::STATE_PRESSED:
state_ = ui::NativeTheme::kPressed;
break;
case views::Button::ButtonState::STATE_DISABLED:
state_ = ui::NativeTheme::kDisabled;
break;
case views::Button::ButtonState::STATE_COUNT:
NOTREACHED();
state_ = ui::NativeTheme::kNormal;
break;
}
}
~GtkButtonImageSource() override = default;
gfx::ImageSkiaRep GetImageForScale(float scale) override {
int width = width_ * scale;
int height = height_ * scale;
SkBitmap border;
border.allocN32Pixels(width, height);
border.eraseColor(0);
cairo_surface_t* surface = cairo_image_surface_create_for_data(
static_cast<unsigned char*>(border.getAddr(0, 0)), CAIRO_FORMAT_ARGB32,
width, height, width * 4);
cairo_t* cr = cairo_create(surface);
GtkCssContext context = GetStyleContextFromCss("GtkButton#button");
GtkStateFlags state_flags = StateToStateFlags(state_);
if (focus_) {
state_flags =
static_cast<GtkStateFlags>(state_flags | GTK_STATE_FLAG_FOCUSED);
}
gtk_style_context_set_state(context, state_flags);
gtk_render_background(context, cr, 0, 0, width, height);
gtk_render_frame(context, cr, 0, 0, width, height);
if (focus_) {
gfx::Rect focus_rect(width, height);
if (!GtkCheckVersion(3, 14)) {
gint focus_pad;
GtkStyleContextGetStyle(context, "focus-padding", &focus_pad, nullptr);
focus_rect.Inset(focus_pad, focus_pad);
if (state_ == ui::NativeTheme::kPressed) {
gint child_displacement_x, child_displacement_y;
gboolean displace_focus;
GtkStyleContextGetStyle(context, "child-displacement-x",
&child_displacement_x, "child-displacement-y",
&child_displacement_y, "displace-focus",
&displace_focus, nullptr);
if (displace_focus)
focus_rect.Offset(child_displacement_x, child_displacement_y);
}
}
if (!GtkCheckVersion(3, 20))
focus_rect.Inset(GtkStyleContextGetBorder(context));
gtk_render_focus(context, cr, focus_rect.x(), focus_rect.y(),
focus_rect.width(), focus_rect.height());
}
cairo_destroy(cr);
cairo_surface_destroy(surface);
return gfx::ImageSkiaRep(border, scale);
}
private:
bool focus_;
ui::NativeTheme::State state_;
int width_;
int height_;
DISALLOW_COPY_AND_ASSIGN(GtkButtonImageSource);
};
class GtkButtonPainter : public views::Painter {
public:
GtkButtonPainter(bool focus, views::Button::ButtonState button_state)
: focus_(focus), button_state_(button_state) {}
~GtkButtonPainter() override = default;
gfx::Size GetMinimumSize() const override { return gfx::Size(); }
void Paint(gfx::Canvas* canvas, const gfx::Size& size) override {
gfx::ImageSkia image(
std::make_unique<GtkButtonImageSource>(focus_, button_state_, size), 1);
canvas->DrawImageInt(image, 0, 0);
}
private:
const bool focus_;
const views::Button::ButtonState button_state_;
DISALLOW_COPY_AND_ASSIGN(GtkButtonPainter);
};
// Number of app indicators used (used as part of app-indicator id).
int indicators_count;
// The unknown content type.
const char kUnknownContentType[] = "application/octet-stream";
std::unique_ptr<SettingsProvider> CreateSettingsProvider(GtkUi* gtk_ui) {
if (GtkCheckVersion(3, 14))
return std::make_unique<SettingsProviderGtk>(gtk_ui);
#if defined(USE_GIO)
return std::make_unique<SettingsProviderGSettings>(gtk_ui);
#else
return nullptr;
#endif
}
// Returns a gfx::FontRenderParams corresponding to GTK's configuration.
gfx::FontRenderParams GetGtkFontRenderParams() {
GtkSettings* gtk_settings = gtk_settings_get_default();
CHECK(gtk_settings);
gint antialias = 0;
gint hinting = 0;
gchar* hint_style = nullptr;
gchar* rgba = nullptr;
g_object_get(gtk_settings, "gtk-xft-antialias", &antialias, "gtk-xft-hinting",
&hinting, "gtk-xft-hintstyle", &hint_style, "gtk-xft-rgba",
&rgba, nullptr);
gfx::FontRenderParams params;
params.antialiasing = antialias != 0;
if (hinting == 0 || !hint_style || strcmp(hint_style, "hintnone") == 0) {
params.hinting = gfx::FontRenderParams::HINTING_NONE;
} else if (strcmp(hint_style, "hintslight") == 0) {
params.hinting = gfx::FontRenderParams::HINTING_SLIGHT;
} else if (strcmp(hint_style, "hintmedium") == 0) {
params.hinting = gfx::FontRenderParams::HINTING_MEDIUM;
} else if (strcmp(hint_style, "hintfull") == 0) {
params.hinting = gfx::FontRenderParams::HINTING_FULL;
} else {
LOG(WARNING) << "Unexpected gtk-xft-hintstyle \"" << hint_style << "\"";
params.hinting = gfx::FontRenderParams::HINTING_NONE;
}
if (!rgba || strcmp(rgba, "none") == 0) {
params.subpixel_rendering = gfx::FontRenderParams::SUBPIXEL_RENDERING_NONE;
} else if (strcmp(rgba, "rgb") == 0) {
params.subpixel_rendering = gfx::FontRenderParams::SUBPIXEL_RENDERING_RGB;
} else if (strcmp(rgba, "bgr") == 0) {
params.subpixel_rendering = gfx::FontRenderParams::SUBPIXEL_RENDERING_BGR;
} else if (strcmp(rgba, "vrgb") == 0) {
params.subpixel_rendering = gfx::FontRenderParams::SUBPIXEL_RENDERING_VRGB;
} else if (strcmp(rgba, "vbgr") == 0) {
params.subpixel_rendering = gfx::FontRenderParams::SUBPIXEL_RENDERING_VBGR;
} else {
LOG(WARNING) << "Unexpected gtk-xft-rgba \"" << rgba << "\"";
params.subpixel_rendering = gfx::FontRenderParams::SUBPIXEL_RENDERING_NONE;
}
g_free(hint_style);
g_free(rgba);
return params;
}
views::LinuxUI::WindowFrameAction GetDefaultMiddleClickAction() {
if (GtkCheckVersion(3, 14))
return views::LinuxUI::WindowFrameAction::kNone;
std::unique_ptr<base::Environment> env(base::Environment::Create());
switch (base::nix::GetDesktopEnvironment(env.get())) {
case base::nix::DESKTOP_ENVIRONMENT_KDE4:
case base::nix::DESKTOP_ENVIRONMENT_KDE5:
// Starting with KDE 4.4, windows' titlebars can be dragged with the
// middle mouse button to create tab groups. We don't support that in
// Chrome, but at least avoid lowering windows in response to middle
// clicks to avoid surprising users who expect the KDE behavior.
return views::LinuxUI::WindowFrameAction::kNone;
default:
return views::LinuxUI::WindowFrameAction::kLower;
}
}
} // namespace
GtkUi::GtkUi(ui::GtkUiDelegate* delegate) : delegate_(delegate) {
using Action = views::LinuxUI::WindowFrameAction;
using ActionSource = views::LinuxUI::WindowFrameActionSource;
DCHECK(!g_gtk_ui);
g_gtk_ui = this;
window_frame_actions_ = {
{ActionSource::kDoubleClick, Action::kToggleMaximize},
{ActionSource::kMiddleClick, GetDefaultMiddleClickAction()},
{ActionSource::kRightClick, Action::kMenu}};
CHECK(LoadGtk());
// Avoid GTK initializing atk-bridge, and let AuraLinux implementation
// do it once it is ready.
std::unique_ptr<base::Environment> env(base::Environment::Create());
env->SetVar("NO_AT_BRIDGE", "1");
GtkInitFromCommandLine(*base::CommandLine::ForCurrentProcess());
native_theme_ = NativeThemeGtk::instance();
}
GtkUi::~GtkUi() {
g_gtk_ui = nullptr;
}
ui::GtkUiDelegate* GtkUi::GetDelegate() {
DCHECK(g_gtk_ui) << "GtkUi instance is not set.";
return g_gtk_ui->delegate_;
}
void GtkUi::Initialize() {
#if defined(USE_OZONE)
// Linux ozone platforms may want to set LinuxInputMethodContextFactory
// instance instead of using GtkUi context factory. This step is made upon
// CreateInputMethod call. If the factory is not set, use the GtkUi context
// factory.
if (!features::IsUsingOzonePlatform() ||
!ui::OzonePlatform::GetInstance()->CreateInputMethod(
nullptr, gfx::kNullAcceleratedWidget)) {
if (!ui::LinuxInputMethodContextFactory::instance())
ui::LinuxInputMethodContextFactory::SetInstance(this);
}
#endif
GtkSettings* settings = gtk_settings_get_default();
g_signal_connect_after(settings, "notify::gtk-theme-name",
G_CALLBACK(OnThemeChangedThunk), this);
g_signal_connect_after(settings, "notify::gtk-icon-theme-name",
G_CALLBACK(OnThemeChangedThunk), this);
g_signal_connect_after(settings, "notify::gtk-application-prefer-dark-theme",
G_CALLBACK(OnThemeChangedThunk), this);
g_signal_connect_after(settings, "notify::gtk-cursor-theme-name",
G_CALLBACK(OnCursorThemeNameChangedThunk), this);
g_signal_connect_after(settings, "notify::gtk-cursor-theme-size",
G_CALLBACK(OnCursorThemeSizeChangedThunk), this);
g_signal_connect_after(settings, "notify::gtk-xft-dpi",
G_CALLBACK(OnDeviceScaleFactorMaybeChangedThunk),
this);
// Listen for scale factor changes. We would prefer to listen on
// a GdkScreen, but there is no scale-factor property, so use an
// unmapped window instead.
g_signal_connect(GetDummyWindow(), "notify::scale-factor",
G_CALLBACK(OnDeviceScaleFactorMaybeChangedThunk), this);
LoadGtkValues();
#if BUILDFLAG(ENABLE_PRINTING)
printing::PrintingContextLinux::SetCreatePrintDialogFunction(
&PrintDialogGtk::CreatePrintDialog);
printing::PrintingContextLinux::SetPdfPaperSizeFunction(
&GetPdfPaperSizeDeviceUnitsGtk);
#endif
// We must build this after GTK gets initialized.
settings_provider_ = CreateSettingsProvider(this);
indicators_count = 0;
GetDelegate()->OnInitialized(GetDummyWindow());
}
bool GtkUi::GetTint(int id, color_utils::HSL* tint) const {
switch (id) {
// Tints for which the cross-platform default is fine. Before adding new
// values here, specifically verify they work well on Linux.
case ThemeProperties::TINT_BACKGROUND_TAB:
// TODO(estade): Return something useful for TINT_BUTTONS so that chrome://
// page icons are colored appropriately.
case ThemeProperties::TINT_BUTTONS:
break;
default:
// Assume any tints not specifically verified on Linux aren't usable.
// TODO(pkasting): Try to remove values from |colors_| that could just be
// added to the group above instead.
NOTREACHED();
}
return false;
}
bool GtkUi::GetColor(int id, SkColor* color, bool use_custom_frame) const {
for (const ColorMap& color_map :
{colors_,
use_custom_frame ? custom_frame_colors_ : native_frame_colors_}) {
auto it = color_map.find(id);
if (it != color_map.end()) {
*color = it->second;
return true;
}
}
return false;
}
bool GtkUi::GetDisplayProperty(int id, int* result) const {
if (id == ThemeProperties::SHOULD_FILL_BACKGROUND_TAB_COLOR) {
*result = 0;
return true;
}
return false;
}
SkColor GtkUi::GetFocusRingColor() const {
return focus_ring_color_;
}
SkColor GtkUi::GetActiveSelectionBgColor() const {
return active_selection_bg_color_;
}
SkColor GtkUi::GetActiveSelectionFgColor() const {
return active_selection_fg_color_;
}
SkColor GtkUi::GetInactiveSelectionBgColor() const {
return inactive_selection_bg_color_;
}
SkColor GtkUi::GetInactiveSelectionFgColor() const {
return inactive_selection_fg_color_;
}
base::TimeDelta GtkUi::GetCursorBlinkInterval() const {
// 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;
// Dividing GTK's cursor blink cycle time (in milliseconds) by this value
// yields an appropriate value for
// blink::RendererPreferences::caret_blink_interval.
static const double kGtkCursorBlinkCycleFactor = 2000.0;
gint cursor_blink_time = kGtkDefaultCursorBlinkTime;
gboolean cursor_blink = TRUE;
g_object_get(gtk_settings_get_default(), "gtk-cursor-blink-time",
&cursor_blink_time, "gtk-cursor-blink", &cursor_blink, nullptr);
return cursor_blink ? base::TimeDelta::FromSecondsD(
cursor_blink_time / kGtkCursorBlinkCycleFactor)
: base::TimeDelta();
}
ui::NativeTheme* GtkUi::GetNativeTheme(aura::Window* window) const {
return (use_system_theme_callback_.is_null() ||
use_system_theme_callback_.Run(window))
? native_theme_
: ui::NativeTheme::GetInstanceForNativeUi();
}
void GtkUi::SetUseSystemThemeCallback(UseSystemThemeCallback callback) {
use_system_theme_callback_ = std::move(callback);
}
bool GtkUi::GetDefaultUsesSystemTheme() const {
std::unique_ptr<base::Environment> env(base::Environment::Create());
switch (base::nix::GetDesktopEnvironment(env.get())) {
case base::nix::DESKTOP_ENVIRONMENT_CINNAMON:
case base::nix::DESKTOP_ENVIRONMENT_GNOME:
case base::nix::DESKTOP_ENVIRONMENT_PANTHEON:
case base::nix::DESKTOP_ENVIRONMENT_UNITY:
case base::nix::DESKTOP_ENVIRONMENT_XFCE:
return true;
case base::nix::DESKTOP_ENVIRONMENT_KDE3:
case base::nix::DESKTOP_ENVIRONMENT_KDE4:
case base::nix::DESKTOP_ENVIRONMENT_KDE5:
case base::nix::DESKTOP_ENVIRONMENT_OTHER:
return false;
}
// Unless GetDesktopEnvironment() badly misbehaves, this should never happen.
NOTREACHED();
return false;
}
gfx::Image GtkUi::GetIconForContentType(const std::string& content_type,
int size) const {
// This call doesn't take a reference.
GtkIconTheme* theme = GetDefaultIconTheme();
std::string content_types[] = {content_type, kUnknownContentType};
for (size_t i = 0; i < base::size(content_types); ++i) {
auto icon = TakeGObject(g_content_type_get_icon(content_type.c_str()));
SkBitmap bitmap;
if (GtkCheckVersion(4)) {
auto icon_paintable = Gtk4IconThemeLookupByGicon(
theme, icon.get(), size, 1, GTK_TEXT_DIR_NONE,
static_cast<GtkIconLookupFlags>(0));
if (!icon_paintable)
continue;
auto* paintable = GlibCast<GdkPaintable>(icon_paintable.get(),
gdk_paintable_get_type());
auto* snapshot = gtk_snapshot_new();
gdk_paintable_snapshot(paintable, snapshot, size, size);
auto* node = gtk_snapshot_free_to_node(snapshot);
GdkTexture* texture = GetTextureFromRenderNode(node);
bitmap.allocN32Pixels(gdk_texture_get_width(texture),
gdk_texture_get_height(texture));
gdk_texture_download(texture, static_cast<guchar*>(bitmap.getAddr(0, 0)),
bitmap.rowBytes());
gsk_render_node_unref(node);
} else {
auto icon_info = Gtk3IconThemeLookupByGicon(
theme, icon.get(), size,
static_cast<GtkIconLookupFlags>(GTK_ICON_LOOKUP_FORCE_SIZE));
if (!icon_info)
continue;
auto* surface =
gtk_icon_info_load_surface(icon_info.get(), nullptr, nullptr);
if (!surface)
continue;
DCHECK_EQ(cairo_surface_get_type(surface), CAIRO_SURFACE_TYPE_IMAGE);
DCHECK_EQ(cairo_image_surface_get_format(surface), CAIRO_FORMAT_ARGB32);
SkImageInfo image_info =
SkImageInfo::Make(cairo_image_surface_get_width(surface),
cairo_image_surface_get_height(surface),
kBGRA_8888_SkColorType, kUnpremul_SkAlphaType);
if (!bitmap.installPixels(
image_info, cairo_image_surface_get_data(surface),
image_info.minRowBytes(),
[](void*, void* surface) {
cairo_surface_destroy(
reinterpret_cast<cairo_surface_t*>(surface));
},
surface)) {
continue;
}
}
gfx::ImageSkia image_skia = gfx::ImageSkia::CreateFrom1xBitmap(bitmap);
image_skia.MakeThreadSafe();
return gfx::Image(image_skia);
}
return gfx::Image();
}
std::unique_ptr<views::Border> GtkUi::CreateNativeBorder(
views::LabelButton* owning_button,
std::unique_ptr<views::LabelButtonBorder> border) {
if (owning_button->GetNativeTheme() != native_theme_)
return std::move(border);
auto gtk_border = std::make_unique<views::LabelButtonAssetBorder>();
gtk_border->set_insets(border->GetInsets());
constexpr bool kFocus = true;
static struct {
bool focus;
views::Button::ButtonState state;
} const paintstates[] = {
{!kFocus, views::Button::STATE_NORMAL},
{!kFocus, views::Button::STATE_HOVERED},
{!kFocus, views::Button::STATE_PRESSED},
{!kFocus, views::Button::STATE_DISABLED},
{kFocus, views::Button::STATE_NORMAL},
{kFocus, views::Button::STATE_HOVERED},
{kFocus, views::Button::STATE_PRESSED},
{kFocus, views::Button::STATE_DISABLED},
};
for (const auto& paintstate : paintstates) {
gtk_border->SetPainter(
paintstate.focus, paintstate.state,
border->PaintsButtonState(paintstate.focus, paintstate.state)
? std::make_unique<GtkButtonPainter>(paintstate.focus,
paintstate.state)
: nullptr);
}
return std::move(gtk_border);
}
void GtkUi::AddWindowButtonOrderObserver(
views::WindowButtonOrderObserver* observer) {
if (nav_buttons_set_)
observer->OnWindowButtonOrderingChange(leading_buttons_, trailing_buttons_);
window_button_order_observer_list_.AddObserver(observer);
}
void GtkUi::RemoveWindowButtonOrderObserver(
views::WindowButtonOrderObserver* observer) {
window_button_order_observer_list_.RemoveObserver(observer);
}
void GtkUi::SetWindowButtonOrdering(
const std::vector<views::FrameButton>& leading_buttons,
const std::vector<views::FrameButton>& trailing_buttons) {
leading_buttons_ = leading_buttons;
trailing_buttons_ = trailing_buttons;
nav_buttons_set_ = true;
for (views::WindowButtonOrderObserver& observer :
window_button_order_observer_list_) {
observer.OnWindowButtonOrderingChange(leading_buttons_, trailing_buttons_);
}
}
void GtkUi::SetWindowFrameAction(WindowFrameActionSource source,
WindowFrameAction action) {
window_frame_actions_[source] = action;
}
std::unique_ptr<ui::LinuxInputMethodContext> GtkUi::CreateInputMethodContext(
ui::LinuxInputMethodContextDelegate* delegate,
bool is_simple) const {
return std::make_unique<InputMethodContextImplGtk>(delegate, is_simple);
}
gfx::FontRenderParams GtkUi::GetDefaultFontRenderParams() const {
static gfx::FontRenderParams params = GetGtkFontRenderParams();
return params;
}
void GtkUi::GetDefaultFontDescription(std::string* family_out,
int* size_pixels_out,
int* style_out,
gfx::Font::Weight* weight_out,
gfx::FontRenderParams* params_out) const {
*family_out = default_font_family_;
*size_pixels_out = default_font_size_pixels_;
*style_out = default_font_style_;
*weight_out = default_font_weight_;
*params_out = default_font_render_params_;
}
ui::SelectFileDialog* GtkUi::CreateSelectFileDialog(
ui::SelectFileDialog::Listener* listener,
std::unique_ptr<ui::SelectFilePolicy> policy) const {
return SelectFileDialogImpl::Create(listener, std::move(policy));
}
views::LinuxUI::WindowFrameAction GtkUi::GetWindowFrameAction(
WindowFrameActionSource source) {
return window_frame_actions_[source];
}
void GtkUi::NotifyWindowManagerStartupComplete() {
// TODO(port) Implement this using _NET_STARTUP_INFO_BEGIN/_NET_STARTUP_INFO
// from http://standards.freedesktop.org/startup-notification-spec/ instead.
gdk_display_notify_startup_complete(gdk_display_get_default(), nullptr);
}
void GtkUi::AddDeviceScaleFactorObserver(
views::DeviceScaleFactorObserver* observer) {
device_scale_factor_observer_list_.AddObserver(observer);
}
void GtkUi::RemoveDeviceScaleFactorObserver(
views::DeviceScaleFactorObserver* observer) {
device_scale_factor_observer_list_.RemoveObserver(observer);
}
bool GtkUi::PreferDarkTheme() const {
gboolean dark = false;
g_object_get(gtk_settings_get_default(), "gtk-application-prefer-dark-theme",
&dark, nullptr);
return dark;
}
bool GtkUi::AnimationsEnabled() const {
gboolean animations_enabled = false;
g_object_get(gtk_settings_get_default(), "gtk-enable-animations",
&animations_enabled, nullptr);
return animations_enabled;
}
std::unique_ptr<views::NavButtonProvider> GtkUi::CreateNavButtonProvider() {
if (GtkCheckVersion(3, 14))
return std::make_unique<gtk::NavButtonProviderGtk>();
return nullptr;
}
// Mapping from GDK dead keys to corresponding printable character.
static struct {
guint gdk_key;
guint16 unicode;
} kDeadKeyMapping[] = {
{GDK_KEY_dead_grave, 0x0060}, {GDK_KEY_dead_acute, 0x0027},
{GDK_KEY_dead_circumflex, 0x005e}, {GDK_KEY_dead_tilde, 0x007e},
{GDK_KEY_dead_diaeresis, 0x00a8},
};
base::flat_map<std::string, std::string> GtkUi::GetKeyboardLayoutMap() {
GdkDisplay* display = gdk_display_get_default();
GdkKeymap* keymap = nullptr;
if (!GtkCheckVersion(4)) {
keymap = gdk_keymap_get_for_display(display);
if (!keymap)
return {};
}
auto layouts = std::make_unique<ui::DomKeyboardLayoutManager>();
auto map = base::flat_map<std::string, std::string>();
for (unsigned int i_domcode = 0;
i_domcode < ui::kWritingSystemKeyDomCodeEntries; ++i_domcode) {
ui::DomCode domcode = ui::writing_system_key_domcodes[i_domcode];
guint16 keycode = ui::KeycodeConverter::DomCodeToNativeKeycode(domcode);
GdkKeymapKey* keys = nullptr;
guint* keyvals = nullptr;
gint n_entries = 0;
// The order of the layouts is based on the system default ordering in
// Keyboard Settings. The currently active layout does not affect this
// order.
const bool success =
GtkCheckVersion(4) ? gdk_display_map_keycode(display, keycode, &keys,
&keyvals, &n_entries)
: gdk_keymap_get_entries_for_keycode(
keymap, keycode, &keys, &keyvals, &n_entries);
if (success) {
for (gint i = 0; i < n_entries; ++i) {
// There are 4 entries per layout group, one each for shift level 0..3.
// We only care about the unshifted values (level = 0).
if (keys[i].level == 0) {
uint16_t unicode = gdk_keyval_to_unicode(keyvals[i]);
if (unicode == 0) {
for (const auto& i_dead : kDeadKeyMapping) {
if (keyvals[i] == i_dead.gdk_key)
unicode = i_dead.unicode;
}
}
if (unicode != 0)
layouts->GetLayout(keys[i].group)->AddKeyMapping(domcode, unicode);
}
}
}
g_free(keys);
g_free(keyvals);
}
return layouts->GetFirstAsciiCapableLayout()->GetMap();
}
std::string GtkUi::GetCursorThemeName() {
gchar* theme = nullptr;
g_object_get(gtk_settings_get_default(), "gtk-cursor-theme-name", &theme,
nullptr);
std::string theme_string;
if (theme) {
theme_string = theme;
g_free(theme);
}
return theme_string;
}
int GtkUi::GetCursorThemeSize() {
gint size = 0;
g_object_get(gtk_settings_get_default(), "gtk-cursor-theme-size", &size,
nullptr);
return size;
}
bool GtkUi::MatchEvent(const ui::Event& event,
std::vector<ui::TextEditCommandAuraLinux>* commands) {
// GTK4 dropped custom key bindings.
if (GtkCheckVersion(4))
return false;
// TODO(crbug.com/963419): Use delegate's |GetGdkKeymap| here to
// determine if GtkUi's key binding handling implementation is used or not.
// Ozone/Wayland was unintentionally using GtkUi for keybinding handling, so
// early out here, for now, until a proper solution for ozone is implemented.
if (!GetDelegate()->GetGdkKeymap())
return false;
// Ensure that we have a keyboard handler.
if (!key_bindings_handler_)
key_bindings_handler_ = std::make_unique<GtkKeyBindingsHandler>();
return key_bindings_handler_->MatchEvent(event, commands);
}
void GtkUi::OnThemeChanged(GtkSettings* settings, GtkParamSpec* param) {
colors_.clear();
custom_frame_colors_.clear();
native_frame_colors_.clear();
native_theme_->OnThemeChanged(settings, param);
LoadGtkValues();
native_theme_->NotifyOnNativeThemeUpdated();
}
void GtkUi::OnCursorThemeNameChanged(GtkSettings* settings,
GtkParamSpec* param) {
std::string cursor_theme_name = GetCursorThemeName();
if (cursor_theme_name.empty())
return;
for (auto& observer : cursor_theme_observers())
observer.OnCursorThemeNameChanged(cursor_theme_name);
}
void GtkUi::OnCursorThemeSizeChanged(GtkSettings* settings,
GtkParamSpec* param) {
int cursor_theme_size = GetCursorThemeSize();
if (!cursor_theme_size)
return;
for (auto& observer : cursor_theme_observers())
observer.OnCursorThemeSizeChanged(cursor_theme_size);
}
void GtkUi::OnDeviceScaleFactorMaybeChanged(void*, GParamSpec*) {
UpdateDeviceScaleFactor();
}
void GtkUi::LoadGtkValues() {
// TODO(thomasanderson): GtkThemeService had a comment here about having to
// muck with the raw Prefs object to remove prefs::kCurrentThemeImages or else
// we'd regress startup time. Figure out how to do that when we can't access
// the prefs system from here.
UpdateDeviceScaleFactor();
UpdateColors();
}
void GtkUi::UpdateColors() {
SkColor location_bar_border = GetBorderColor("GtkEntry#entry");
if (SkColorGetA(location_bar_border))
colors_[ThemeProperties::COLOR_LOCATION_BAR_BORDER] = location_bar_border;
inactive_selection_bg_color_ = GetSelectionBgColor(
GtkCheckVersion(3, 20) ? "GtkTextView#textview.view:backdrop "
"#text:backdrop #selection:backdrop"
: "GtkTextView.view:selected:backdrop");
inactive_selection_fg_color_ =
GetFgColor(GtkCheckVersion(3, 20) ? "GtkTextView#textview.view:backdrop "
"#text:backdrop #selection:backdrop"
: "GtkTextView.view:selected:backdrop");
SkColor tab_border = GetBorderColor("GtkButton#button");
// Separates the toolbar from the bookmark bar or butter bars.
colors_[ThemeProperties::COLOR_TOOLBAR_CONTENT_AREA_SEPARATOR] = tab_border;
// Separates entries in the downloads bar.
colors_[ThemeProperties::COLOR_TOOLBAR_VERTICAL_SEPARATOR] = tab_border;
colors_[ThemeProperties::COLOR_NTP_BACKGROUND] =
native_theme_->GetSystemColor(
ui::NativeTheme::kColorId_TextfieldDefaultBackground);
colors_[ThemeProperties::COLOR_NTP_TEXT] = native_theme_->GetSystemColor(
ui::NativeTheme::kColorId_TextfieldDefaultColor);
colors_[ThemeProperties::COLOR_NTP_HEADER] =
GetBorderColor("GtkButton#button");
SkColor tab_text_color = GetFgColor("GtkLabel#label");
colors_[ThemeProperties::COLOR_TOOLBAR_BUTTON_ICON] = tab_text_color;
colors_[ThemeProperties::COLOR_TOOLBAR_BUTTON_ICON_HOVERED] = tab_text_color;
colors_[ThemeProperties::COLOR_TOOLBAR_BUTTON_ICON_PRESSED] = tab_text_color;
colors_[ThemeProperties::COLOR_TAB_FOREGROUND_ACTIVE_FRAME_ACTIVE] =
tab_text_color;
colors_[ThemeProperties::COLOR_TAB_FOREGROUND_ACTIVE_FRAME_INACTIVE] =
tab_text_color;
colors_[ThemeProperties::COLOR_BOOKMARK_TEXT] = tab_text_color;
colors_[ThemeProperties::COLOR_NTP_LINK] = native_theme_->GetSystemColor(
ui::NativeTheme::kColorId_TextfieldSelectionBackgroundFocused);
// Generate the colors that we pass to Blink.
focus_ring_color_ = native_theme_->GetSystemColor(
ui::NativeTheme::kColorId_FocusedBorderColor);
// Some GTK themes only define the text selection colors on the GtkEntry
// class, so we need to use that for getting selection colors.
active_selection_bg_color_ = native_theme_->GetSystemColor(
ui::NativeTheme::kColorId_TextfieldSelectionBackgroundFocused);
active_selection_fg_color_ = native_theme_->GetSystemColor(
ui::NativeTheme::kColorId_TextfieldSelectionColor);
colors_[ThemeProperties::COLOR_TAB_THROBBER_SPINNING] =
native_theme_->GetSystemColor(
ui::NativeTheme::kColorId_ThrobberSpinningColor);
colors_[ThemeProperties::COLOR_TAB_THROBBER_WAITING] =
native_theme_->GetSystemColor(
ui::NativeTheme::kColorId_ThrobberWaitingColor);
// Generate colors that depend on whether or not a custom window frame is
// used. These colors belong in |color_map| below, not |colors_|.
for (bool custom_frame : {false, true}) {
ColorMap& color_map =
custom_frame ? custom_frame_colors_ : native_frame_colors_;
const std::string header_selector =
custom_frame ? "#headerbar.header-bar.titlebar" : "GtkMenuBar#menubar";
const std::string header_selector_inactive = header_selector + ":backdrop";
const SkColor frame_color =
SkColorSetA(GetBgColor(header_selector), SK_AlphaOPAQUE);
const SkColor frame_color_inactive =
SkColorSetA(GetBgColor(header_selector_inactive), SK_AlphaOPAQUE);
color_map[ThemeProperties::COLOR_FRAME_ACTIVE] = frame_color;
color_map[ThemeProperties::COLOR_FRAME_INACTIVE] = frame_color_inactive;
color_map[ThemeProperties::COLOR_FRAME_ACTIVE_INCOGNITO] = frame_color;
color_map[ThemeProperties::COLOR_FRAME_INACTIVE_INCOGNITO] =
frame_color_inactive;
// Compose the window color on the frame color to ensure the resulting tab
// color is opaque.
SkColor tab_color =
color_utils::GetResultingPaintColor(GetBgColor(""), frame_color);
color_map[ThemeProperties::COLOR_TOOLBAR] = tab_color;
color_map[ThemeProperties::COLOR_DOWNLOAD_SHELF] = tab_color;
color_map[ThemeProperties::COLOR_INFOBAR] = tab_color;
color_map[ThemeProperties::COLOR_STATUS_BUBBLE] = tab_color;
color_map[ThemeProperties::COLOR_TAB_BACKGROUND_ACTIVE_FRAME_ACTIVE] =
tab_color;
color_map[ThemeProperties::COLOR_TAB_BACKGROUND_ACTIVE_FRAME_INACTIVE] =
tab_color;
const SkColor background_tab_text_color =
GetFgColor(header_selector + " GtkLabel#label.title");
const SkColor background_tab_text_color_inactive =
GetFgColor(header_selector_inactive + " GtkLabel#label.title");
color_map[ThemeProperties::COLOR_TAB_FOREGROUND_INACTIVE_FRAME_ACTIVE] =
background_tab_text_color;
color_map[ThemeProperties::
COLOR_TAB_FOREGROUND_INACTIVE_FRAME_ACTIVE_INCOGNITO] =
background_tab_text_color;
color_map[ThemeProperties::COLOR_TAB_FOREGROUND_INACTIVE_FRAME_INACTIVE] =
background_tab_text_color_inactive;
color_map[ThemeProperties::
COLOR_TAB_FOREGROUND_INACTIVE_FRAME_INACTIVE_INCOGNITO] =
background_tab_text_color_inactive;
color_map[ThemeProperties::COLOR_OMNIBOX_TEXT] =
native_theme_->GetSystemColor(
ui::NativeTheme::kColorId_TextfieldDefaultColor);
color_map[ThemeProperties::COLOR_OMNIBOX_BACKGROUND] =
native_theme_->GetSystemColor(
ui::NativeTheme::kColorId_TextfieldDefaultBackground);
// These colors represent the border drawn around tabs and between
// the tabstrip and toolbar.
SkColor toolbar_top_separator = GetBorderColor(
header_selector + " GtkSeparator#separator.vertical.titlebutton");
SkColor toolbar_top_separator_inactive =
GetBorderColor(header_selector +
":backdrop GtkSeparator#separator.vertical.titlebutton");
auto toolbar_top_separator_has_good_contrast = [&]() {
// This constant is copied from chrome/browser/themes/theme_service.cc.
const float kMinContrastRatio = 2.f;
SkColor active = color_utils::GetResultingPaintColor(
toolbar_top_separator, frame_color);
SkColor inactive = color_utils::GetResultingPaintColor(
toolbar_top_separator_inactive, frame_color_inactive);
return color_utils::GetContrastRatio(frame_color, active) >=
kMinContrastRatio &&
color_utils::GetContrastRatio(frame_color_inactive, inactive) >=
kMinContrastRatio;
};
if (!toolbar_top_separator_has_good_contrast()) {
toolbar_top_separator =
GetBorderColor(header_selector + " GtkButton#button");
toolbar_top_separator_inactive =
GetBorderColor(header_selector + ":backdrop GtkButton#button");
}
// If we can't get a contrasting stroke from the theme, have ThemeService
// provide a stroke color for us.
if (toolbar_top_separator_has_good_contrast()) {
color_map[ThemeProperties::COLOR_TOOLBAR_TOP_SEPARATOR] =
toolbar_top_separator;
color_map[ThemeProperties::COLOR_TOOLBAR_TOP_SEPARATOR_INACTIVE] =
toolbar_top_separator_inactive;
}
}
}
void GtkUi::UpdateDefaultFont() {
gfx::SetFontRenderParamsDeviceScaleFactor(device_scale_factor_);
auto fake_label = TakeGObject(gtk_label_new(nullptr));
PangoContext* pc = gtk_widget_get_pango_context(fake_label);
const PangoFontDescription* desc = pango_context_get_font_description(pc);
// Use gfx::FontRenderParams to select a family and determine the rendering
// settings.
gfx::FontRenderParamsQuery query;
query.families =
base::SplitString(pango_font_description_get_family(desc), ",",
base::TRIM_WHITESPACE, base::SPLIT_WANT_ALL);
if (pango_font_description_get_size_is_absolute(desc)) {
// If the size is absolute, it's specified in Pango units. There are
// PANGO_SCALE Pango units in a device unit (pixel).
const int size_pixels = pango_font_description_get_size(desc) / PANGO_SCALE;
default_font_size_pixels_ = size_pixels;