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      1 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #include <Carbon/Carbon.h>
      6 
      7 #include "build/build_config.h"
      8 
      9 #include <vector>
     10 
     11 #include "base/bind.h"
     12 #include "base/logging.h"
     13 #include "base/mac/mac_util.h"
     14 #include "content/browser/browser_child_process_host_impl.h"
     15 #include "content/browser/plugin_process_host.h"
     16 #include "content/public/browser/browser_thread.h"
     17 #include "content/public/browser/child_process_data.h"
     18 #include "ui/gfx/rect.h"
     19 
     20 namespace content {
     21 
     22 void PluginProcessHost::OnPluginSelectWindow(uint32 window_id,
     23                                              gfx::Rect window_rect,
     24                                              bool modal) {
     25   plugin_visible_windows_set_.insert(window_id);
     26   if (modal)
     27     plugin_modal_windows_set_.insert(window_id);
     28 }
     29 
     30 void PluginProcessHost::OnPluginShowWindow(uint32 window_id,
     31                                            gfx::Rect window_rect,
     32                                            bool modal) {
     33   plugin_visible_windows_set_.insert(window_id);
     34   if (modal)
     35     plugin_modal_windows_set_.insert(window_id);
     36   CGRect window_bounds = {
     37     { window_rect.x(), window_rect.y() },
     38     { window_rect.width(), window_rect.height() }
     39   };
     40   CGRect main_display_bounds = CGDisplayBounds(CGMainDisplayID());
     41   if (CGRectEqualToRect(window_bounds, main_display_bounds) &&
     42       (plugin_fullscreen_windows_set_.find(window_id) ==
     43        plugin_fullscreen_windows_set_.end())) {
     44     plugin_fullscreen_windows_set_.insert(window_id);
     45     // If the plugin has just shown a window that's the same dimensions as
     46     // the main display, hide the menubar so that it has the whole screen.
     47     // (but only if we haven't already seen this fullscreen window, since
     48     // otherwise our refcounting can get skewed).
     49     BrowserThread::PostTask(BrowserThread::UI, FROM_HERE,
     50                             base::Bind(base::mac::RequestFullScreen,
     51                                        base::mac::kFullScreenModeHideAll));
     52   }
     53 }
     54 
     55 // Must be called on the UI thread.
     56 // If plugin_pid is -1, the browser will be the active process on return,
     57 // otherwise that process will be given focus back before this function returns.
     58 static void ReleasePluginFullScreen(pid_t plugin_pid) {
     59   // Releasing full screen only works if we are the frontmost process; grab
     60   // focus, but give it back to the plugin process if requested.
     61   base::mac::ActivateProcess(base::GetCurrentProcId());
     62   base::mac::ReleaseFullScreen(base::mac::kFullScreenModeHideAll);
     63   if (plugin_pid != -1) {
     64     base::mac::ActivateProcess(plugin_pid);
     65   }
     66 }
     67 
     68 void PluginProcessHost::OnPluginHideWindow(uint32 window_id,
     69                                            gfx::Rect window_rect) {
     70   bool had_windows = !plugin_visible_windows_set_.empty();
     71   plugin_visible_windows_set_.erase(window_id);
     72   bool browser_needs_activation = had_windows &&
     73       plugin_visible_windows_set_.empty();
     74 
     75   plugin_modal_windows_set_.erase(window_id);
     76   if (plugin_fullscreen_windows_set_.find(window_id) !=
     77       plugin_fullscreen_windows_set_.end()) {
     78     plugin_fullscreen_windows_set_.erase(window_id);
     79     pid_t plugin_pid =
     80         browser_needs_activation ? -1 : process_->GetData().handle;
     81     browser_needs_activation = false;
     82     BrowserThread::PostTask(BrowserThread::UI, FROM_HERE,
     83                             base::Bind(ReleasePluginFullScreen, plugin_pid));
     84   }
     85 
     86   if (browser_needs_activation) {
     87     BrowserThread::PostTask(
     88         BrowserThread::UI, FROM_HERE,
     89         base::Bind(base::mac::ActivateProcess, base::GetCurrentProcId()));
     90   }
     91 }
     92 
     93 void PluginProcessHost::OnAppActivation() {
     94   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
     95 
     96   // If our plugin process has any modal windows up, we need to bring it forward
     97   // so that they act more like an in-process modal window would.
     98   if (!plugin_modal_windows_set_.empty()) {
     99     BrowserThread::PostTask(
    100         BrowserThread::UI, FROM_HERE,
    101         base::Bind(base::mac::ActivateProcess, process_->GetData().handle));
    102   }
    103 }
    104 
    105 void PluginProcessHost::OnPluginSetCursorVisibility(bool visible) {
    106   if (plugin_cursor_visible_ != visible) {
    107     plugin_cursor_visible_ = visible;
    108     BrowserThread::PostTask(BrowserThread::UI, FROM_HERE,
    109                             base::Bind(base::mac::SetCursorVisibility,
    110                                        visible));
    111   }
    112 }
    113 
    114 }  // namespace content
    115