Gtk3 ui: Add libgtk3ui as a separate build component

chrome/browser/ui/libgtk2ui/gtk2_util.cc

-// 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 "chrome/browser/ui/libgtk2ui/gtk2_util.h"
-
-#include <gdk/gdk.h>
-#include <gdk/gdkx.h>
-#include <gtk/gtk.h>
-#include <stddef.h>
-
-#include <memory>
-
-#include "base/command_line.h"
-#include "base/debug/leak_annotations.h"
-#include "base/environment.h"
-#include "ui/aura/window.h"
-#include "ui/aura/window_tree_host.h"
-#include "ui/base/accelerators/accelerator.h"
-#include "ui/events/event_constants.h"
-#include "ui/events/keycodes/keyboard_code_conversion_x.h"
-#include "ui/gfx/geometry/size.h"
-
-namespace {
-
-const char kAuraTransientParent[] = "aura-transient-parent";
-
-void CommonInitFromCommandLine(const base::CommandLine& command_line,
-                               void (*init_func)(gint*, gchar***)) {
-  const std::vector<std::string>& args = command_line.argv();
-  int argc = args.size();
-  std::unique_ptr<char* []> argv(new char*[argc + 1]);
-  for (size_t i = 0; i < args.size(); ++i) {
-    // TODO(piman@google.com): can gtk_init modify argv? Just being safe
-    // here.
-    argv[i] = strdup(args[i].c_str());
-  }
-  argv[argc] = NULL;
-  char **argv_pointer = argv.get();
-
-  {
-    // http://crbug.com/423873
-    ANNOTATE_SCOPED_MEMORY_LEAK;
-    init_func(&argc, &argv_pointer);
-  }
-  for (size_t i = 0; i < args.size(); ++i) {
-    free(argv[i]);
-  }
-}
-
-}  // namespace
-
-namespace libgtk2ui {
-
-void GtkInitFromCommandLine(const base::CommandLine& command_line) {
-  CommonInitFromCommandLine(command_line, gtk_init);
-}
-
-// TODO(erg): This method was copied out of shell_integration_linux.cc. Because
-// of how this library is structured as a stand alone .so, we can't call code
-// from browser and above.
-std::string GetDesktopName(base::Environment* env) {
-#if defined(GOOGLE_CHROME_BUILD)
-  return "google-chrome.desktop";
-#else  // CHROMIUM_BUILD
-  // Allow $CHROME_DESKTOP to override the built-in value, so that development
-  // versions can set themselves as the default without interfering with
-  // non-official, packaged versions using the built-in value.
-  std::string name;
-  if (env->GetVar("CHROME_DESKTOP", &name) && !name.empty())
-    return name;
-  return "chromium-browser.desktop";
-#endif
-}
-
-guint GetGdkKeyCodeForAccelerator(const ui::Accelerator& accelerator) {
-  // The second parameter is false because accelerator keys are expressed in
-  // terms of the non-shift-modified key.
-  return XKeysymForWindowsKeyCode(accelerator.key_code(), false);
-}
-
-GdkModifierType GetGdkModifierForAccelerator(
-    const ui::Accelerator& accelerator) {
-  int event_flag = accelerator.modifiers();
-  int modifier = 0;
-  if (event_flag & ui::EF_SHIFT_DOWN)
-    modifier |= GDK_SHIFT_MASK;
-  if (event_flag & ui::EF_CONTROL_DOWN)
-    modifier |= GDK_CONTROL_MASK;
-  if (event_flag & ui::EF_ALT_DOWN)
-    modifier |= GDK_MOD1_MASK;
-  return static_cast<GdkModifierType>(modifier);
-}
-
-int EventFlagsFromGdkState(guint state) {
-  int flags = ui::EF_NONE;
-  flags |= (state & GDK_SHIFT_MASK) ? ui::EF_SHIFT_DOWN : ui::EF_NONE;
-  flags |= (state & GDK_LOCK_MASK) ? ui::EF_CAPS_LOCK_ON : ui::EF_NONE;
-  flags |= (state & GDK_CONTROL_MASK) ? ui::EF_CONTROL_DOWN : ui::EF_NONE;
-  flags |= (state & GDK_MOD1_MASK) ? ui::EF_ALT_DOWN : ui::EF_NONE;
-  flags |= (state & GDK_BUTTON1_MASK) ? ui::EF_LEFT_MOUSE_BUTTON : ui::EF_NONE;
-  flags |=
-      (state & GDK_BUTTON2_MASK) ? ui::EF_MIDDLE_MOUSE_BUTTON : ui::EF_NONE;
-  flags |= (state & GDK_BUTTON3_MASK) ? ui::EF_RIGHT_MOUSE_BUTTON : ui::EF_NONE;
-  return flags;
-}
-
-void TurnButtonBlue(GtkWidget* button) {
-#if GTK_MAJOR_VERSION == 2
-  gtk_widget_set_can_default(button, true);
-#else
-  gtk_style_context_add_class(gtk_widget_get_style_context(button),
-                              "suggested-action");
-#endif
-}
-
-void SetGtkTransientForAura(GtkWidget* dialog, aura::Window* parent) {
-  if (!parent || !parent->GetHost())
-    return;
-
-  gtk_widget_realize(dialog);
-  GdkWindow* gdk_window = gtk_widget_get_window(dialog);
-
-  // TODO(erg): Check to make sure we're using X11 if wayland or some other
-  // display server ever happens. Otherwise, this will crash.
-  XSetTransientForHint(GDK_WINDOW_XDISPLAY(gdk_window),
-                       GDK_WINDOW_XID(gdk_window),
-                       parent->GetHost()->GetAcceleratedWidget());
-
-  // We also set the |parent| as a property of |dialog|, so that we can unlink
-  // the two later.
-  g_object_set_data(G_OBJECT(dialog), kAuraTransientParent, parent);
-}
-
-aura::Window* GetAuraTransientParent(GtkWidget* dialog) {
-  return reinterpret_cast<aura::Window*>(
-      g_object_get_data(G_OBJECT(dialog), kAuraTransientParent));
-}
-
-void ClearAuraTransientParent(GtkWidget* dialog) {
-  g_object_set_data(G_OBJECT(dialog), kAuraTransientParent, NULL);
-}
-
-}  // namespace libgtk2ui