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Add new CanZoom/Zoom API (fixes #3284)

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Add a simpler CanZoom/Zoom API as an alternative to the more error-prone
SetZoomLevel/GetZoomLevel API. Both APIs are now implemented for both runtimes.
With the Chrome runtime a zoom notification bubble will be displayed unless
CefBrowserSettings.chrome_zoom_bubble is set to STATE_DISABLED.

To test:
- Run cefclient and select zoom entries from the Tests menu.
- chrome: Run cefclient with `--hide-chrome-bubbles` command-line flag to hide
  the zoom notification bubble.
This commit is contained in:
Marshall Greenblatt
2023-10-04 19:46:45 -04:00
parent d8ea7363f5
commit 29938f9cb0
20 changed files with 338 additions and 80 deletions
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35
include/capi/cef_browser_capi.h
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@@ -33,7 +33,7 @@
// by hand. See the translator.README.txt file in the tools directory for
// more information.
//
// $hash=683d7bff8da04826eee83c7e23cf9c5a701ae265$
// $hash=db4fce1215cb4f69346ef2d048974ba34187b2b1$
//
#ifndef CEF_INCLUDE_CAPI_CEF_BROWSER_CAPI_H_
@@ -365,16 +365,39 @@ typedef struct _cef_browser_host_t {
struct _cef_browser_host_t* self);
///
/// Get the current zoom level. The default zoom level is 0.0. This function
/// can only be called on the UI thread.
/// Returns true (1) if this browser can execute the specified zoom command.
/// This function can only be called on the UI thread.
///
int(CEF_CALLBACK* can_zoom)(struct _cef_browser_host_t* self,
cef_zoom_command_t command);
///
/// Execute a zoom command in this browser. If called on the UI thread the
/// change will be applied immediately. Otherwise, the change will be applied
/// asynchronously on the UI thread.
///
void(CEF_CALLBACK* zoom)(struct _cef_browser_host_t* self,
cef_zoom_command_t command);
///
/// Get the default zoom level. This value will be 0.0 by default but can be
/// configured with the Chrome runtime. This function can only be called on
/// the UI thread.
///
double(CEF_CALLBACK* get_default_zoom_level)(
struct _cef_browser_host_t* self);
///
/// Get the current zoom level. This function can only be called on the UI
/// thread.
///
double(CEF_CALLBACK* get_zoom_level)(struct _cef_browser_host_t* self);
///
/// Change the zoom level to the specified value. Specify 0.0 to reset the
/// zoom level. If called on the UI thread the change will be applied
/// immediately. Otherwise, the change will be applied asynchronously on the
/// UI thread.
/// zoom level to the default. If called on the UI thread the change will be
/// applied immediately. Otherwise, the change will be applied asynchronously
/// on the UI thread.
///
void(CEF_CALLBACK* set_zoom_level)(struct _cef_browser_host_t* self,
double zoomLevel);