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Implement zoom messages for devtools.

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This commit is contained in:
Cheng Zhao 2014-08-26 15:06:51 +08:00
parent 69bf54cebe
commit 20efd82c98
1 changed files with 38 additions and 0 deletions
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38
brightray/browser/inspectable_web_contents_impl.cc
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@ -21,6 +21,7 @@
#include "content/public/browser/devtools_client_host.h"
#include "content/public/browser/devtools_http_handler.h"
#include "content/public/browser/devtools_manager.h"
#include "content/public/browser/host_zoom_map.h"
#include "content/public/browser/render_frame_host.h"
#include "content/public/browser/render_view_host.h"
@ -28,6 +29,12 @@ namespace brightray {
namespace {
const double kPresetZoomFactors[] = { 0.25, 0.333, 0.5, 0.666, 0.75, 0.9, 1.0,
1.1, 1.25, 1.5, 1.75, 2.0, 2.5, 3.0, 4.0,
5.0 };
const char kDevToolsScheme[] = "chrome-devtools";
const char kDevToolsHost[] = "devtools";
const char kChromeUIDevToolsURL[] = "chrome-devtools://devtools/devtools.html?"
"can_dock=true&&"
"experiments=true";
@ -81,6 +88,32 @@ bool ParseMessage(const std::string& message,
return true;
}
double GetZoomLevelForWebContents(content::WebContents* web_contents) {
content::HostZoomMap* host_zoom_map = content::HostZoomMap::GetForBrowserContext(
web_contents->GetBrowserContext());
return host_zoom_map->GetZoomLevelForHostAndScheme(kDevToolsScheme, kDevToolsHost);
}
void SetZoomLevelForWebContents(content::WebContents* web_contents, double level) {
content::HostZoomMap* host_zoom_map = content::HostZoomMap::GetForBrowserContext(
web_contents->GetBrowserContext());
return host_zoom_map->SetZoomLevelForHostAndScheme(kDevToolsScheme, kDevToolsHost, level);
}
double GetNextZoomLevel(double level, bool out) {
double factor = content::ZoomLevelToZoomFactor(level);
size_t size = arraysize(kPresetZoomFactors);
for (size_t i = 0; i < size; ++i) {
if (!content::ZoomValuesEqual(kPresetZoomFactors[i], factor))
continue;
if (out && i > 0)
return content::ZoomFactorToZoomLevel(kPresetZoomFactors[i - 1]);
if (!out && i != size - 1)
return content::ZoomFactorToZoomLevel(kPresetZoomFactors[i + 1]);
}
return level;
}
} // namespace
// Implemented separately on each platform.
@ -245,12 +278,17 @@ void InspectableWebContentsImpl::SearchInPath(
}
void InspectableWebContentsImpl::ZoomIn() {
double level = GetZoomLevelForWebContents(devtools_web_contents());
SetZoomLevelForWebContents(devtools_web_contents(), GetNextZoomLevel(level, false));
}
void InspectableWebContentsImpl::ZoomOut() {
double level = GetZoomLevelForWebContents(devtools_web_contents());
SetZoomLevelForWebContents(devtools_web_contents(), GetNextZoomLevel(level, true));
}
void InspectableWebContentsImpl::ResetZoom() {
SetZoomLevelForWebContents(devtools_web_contents(), 0.);
}
void InspectableWebContentsImpl::DispatchOnEmbedder(