cef/tests/cefclient/browser/osr_render_handler_win_gl.cc

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// Copyright 2018 The Chromium Embedded Framework 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 "tests/cefclient/browser/osr_render_handler_win_gl.h"
#include "include/base/cef_callback.h"
#include "include/wrapper/cef_closure_task.h"
#include "include/wrapper/cef_helpers.h"
#include "tests/shared/browser/util_win.h"
namespace client {
namespace {
// Helper that calls wglMakeCurrent.
class ScopedGLContext {
public:
ScopedGLContext(HDC hdc, HGLRC hglrc, bool swap_buffers)
: hdc_(hdc), swap_buffers_(swap_buffers) {
[[maybe_unused]] BOOL result = wglMakeCurrent(hdc, hglrc);
DCHECK(result);
}
~ScopedGLContext() {
BOOL result = wglMakeCurrent(nullptr, nullptr);
DCHECK(result);
if (swap_buffers_) {
result = SwapBuffers(hdc_);
DCHECK(result);
}
}
private:
const HDC hdc_;
const bool swap_buffers_;
};
} // namespace
OsrRenderHandlerWinGL::OsrRenderHandlerWinGL(
const OsrRendererSettings& settings,
HWND hwnd)
: OsrRenderHandlerWin(settings, hwnd),
renderer_(settings),
hdc_(nullptr),
hrc_(nullptr),
painting_popup_(false) {}
void OsrRenderHandlerWinGL::Initialize(CefRefPtr<CefBrowser> browser) {
CEF_REQUIRE_UI_THREAD();
SetBrowser(browser);
}
OsrRenderHandlerWinGL::~OsrRenderHandlerWinGL() {
CEF_REQUIRE_UI_THREAD();
DisableGL();
}
void OsrRenderHandlerWinGL::SetSpin(float spinX, float spinY) {
CEF_REQUIRE_UI_THREAD();
renderer_.SetSpin(spinX, spinY);
Invalidate();
}
void OsrRenderHandlerWinGL::IncrementSpin(float spinDX, float spinDY) {
CEF_REQUIRE_UI_THREAD();
renderer_.IncrementSpin(spinDX, spinDY);
Invalidate();
}
bool OsrRenderHandlerWinGL::IsOverPopupWidget(int x, int y) const {
CEF_REQUIRE_UI_THREAD();
const CefRect& rc = renderer_.popup_rect();
int popup_right = rc.x + rc.width;
int popup_bottom = rc.y + rc.height;
return (x >= rc.x) && (x < popup_right) && (y >= rc.y) && (y < popup_bottom);
}
int OsrRenderHandlerWinGL::GetPopupXOffset() const {
CEF_REQUIRE_UI_THREAD();
return renderer_.original_popup_rect().x - renderer_.popup_rect().x;
}
int OsrRenderHandlerWinGL::GetPopupYOffset() const {
CEF_REQUIRE_UI_THREAD();
return renderer_.original_popup_rect().y - renderer_.popup_rect().y;
}
void OsrRenderHandlerWinGL::OnPopupShow(CefRefPtr<CefBrowser> browser,
bool show) {
CEF_REQUIRE_UI_THREAD();
if (!show) {
renderer_.ClearPopupRects();
browser->GetHost()->Invalidate(PET_VIEW);
}
renderer_.OnPopupShow(browser, show);
}
void OsrRenderHandlerWinGL::OnPopupSize(CefRefPtr<CefBrowser> browser,
const CefRect& rect) {
CEF_REQUIRE_UI_THREAD();
renderer_.OnPopupSize(browser, rect);
}
void OsrRenderHandlerWinGL::OnPaint(
CefRefPtr<CefBrowser> browser,
CefRenderHandler::PaintElementType type,
const CefRenderHandler::RectList& dirtyRects,
const void* buffer,
int width,
int height) {
CEF_REQUIRE_UI_THREAD();
if (painting_popup_) {
renderer_.OnPaint(browser, type, dirtyRects, buffer, width, height);
return;
}
if (!hdc_) {
EnableGL();
}
ScopedGLContext scoped_gl_context(hdc_, hrc_, true);
renderer_.OnPaint(browser, type, dirtyRects, buffer, width, height);
if (type == PET_VIEW && !renderer_.popup_rect().IsEmpty()) {
painting_popup_ = true;
browser->GetHost()->Invalidate(PET_POPUP);
painting_popup_ = false;
}
renderer_.Render();
}
void OsrRenderHandlerWinGL::OnAcceleratedPaint(
CefRefPtr<CefBrowser> browser,
CefRenderHandler::PaintElementType type,
const CefRenderHandler::RectList& dirtyRects,
void* share_handle) {
// Not used with this implementation.
NOTREACHED();
}
void OsrRenderHandlerWinGL::Render() {
if (!hdc_) {
EnableGL();
}
ScopedGLContext scoped_gl_context(hdc_, hrc_, true);
renderer_.Render();
}
void OsrRenderHandlerWinGL::EnableGL() {
PIXELFORMATDESCRIPTOR pfd;
int format;
// Get the device context.
hdc_ = GetDC(hwnd());
// Set the pixel format for the DC.
ZeroMemory(&pfd, sizeof(pfd));
pfd.nSize = sizeof(pfd);
pfd.nVersion = 1;
pfd.dwFlags = PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER;
pfd.iPixelType = PFD_TYPE_RGBA;
pfd.cColorBits = 24;
pfd.cDepthBits = 16;
pfd.iLayerType = PFD_MAIN_PLANE;
format = ChoosePixelFormat(hdc_, &pfd);
SetPixelFormat(hdc_, format, &pfd);
// Create and enable the render context.
hrc_ = wglCreateContext(hdc_);
ScopedGLContext scoped_gl_context(hdc_, hrc_, false);
renderer_.Initialize();
}
void OsrRenderHandlerWinGL::DisableGL() {
if (!hdc_) {
return;
}
{
ScopedGLContext scoped_gl_context(hdc_, hrc_, false);
renderer_.Cleanup();
}
if (IsWindow(hwnd())) {
// wglDeleteContext will make the context not current before deleting it.
[[maybe_unused]] BOOL result = wglDeleteContext(hrc_);
DCHECK(result);
ReleaseDC(hwnd(), hdc_);
}
hdc_ = nullptr;
hrc_ = nullptr;
}
} // namespace client