mirror of
https://bitbucket.org/chromiumembedded/cef
synced 2025-06-05 21:39:12 +02:00
Merge revision 569 and 624 changes:
- Add off-screen rendering support for Mac OS-X (issue #540). - Add patch for ninja build support on Mac OS-X. - Avoid calling OnSetFocus multiple times (issue #563). git-svn-id: https://chromiumembedded.googlecode.com/svn/branches/1025@626 5089003a-bbd8-11dd-ad1f-f1f9622dbc98
This commit is contained in:
Marshall Greenblatt
410
tests/cefclient/osrenderer.cpp
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410
tests/cefclient/osrenderer.cpp
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// Copyright (c) 2012 The Chromium Embedded Framework Authors. All rights
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// reserved. Use of this source code is governed by a BSD-style license
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// that can be found in the LICENSE file.
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#include "cefclient/osrenderer.h"
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#include "cefclient/util.h"
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#if defined(OS_WIN)
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#include <gl/gl.h>
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#include <gl/glu.h>
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#elif defined(OS_MACOSX)
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#include <OpenGL/gl.h>
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#else
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#error Platform is not supported.
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#endif
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namespace {
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// Convert from BGRA to RGBA format and from upper-left to lower-left origin.
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void ConvertToRGBA(const unsigned char* src, unsigned char* dst,
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int width, int height) {
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int sp = 0, dp = (height-1) * width * 4;
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for (int i = 0; i < height; i++) {
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for (int j = 0; j < width; j++, dp += 4, sp += 4) {
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dst[dp] = src[sp+2]; // R
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dst[dp+1] = src[sp+1]; // G
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dst[dp+2] = src[sp]; // B
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dst[dp+3] = src[sp+3]; // A
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}
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dp -= width * 8;
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}
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}
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void ConvertToRGBARect(const CefRect& clipRect,
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const unsigned char* src, unsigned char* dst,
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int width, int height) {
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int sp = 0, dp = (height-1) * width * 4;
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for (int i = 0; i < height; i++) {
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for (int j = 0; j < width; j++, dp += 4, sp += 4) {
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if ((clipRect.x <= j) && (clipRect.x + clipRect.width > j) &&
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(clipRect.y <= i) && (clipRect.y + clipRect.height > i)) {
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dst[dp] = src[sp+2]; // R
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dst[dp+1] = src[sp+1]; // G
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dst[dp+2] = src[sp]; // B
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dst[dp+3] = src[sp+3]; // A
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}
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}
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dp -= width * 8;
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}
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}
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// Convert from BGRA to RGB format and from upper-left to lower-left origin.
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void ConvertToRGB(const unsigned char* src, unsigned char* dst,
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int width, int height) {
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int sp = 0, dp = (height-1) * width * 3;
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for (int i = 0; i < height; i++) {
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for (int j = 0; j < width; j++, dp += 3, sp += 4) {
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dst[dp] = src[sp+2]; // R
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dst[dp+1] = src[sp+1]; // G
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dst[dp+2] = src[sp]; // B
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}
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dp -= width * 6;
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}
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}
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void ConvertToRGBRect(const CefRect& clipRect,
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const unsigned char* src, unsigned char* dst,
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int width, int height) {
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int sp = 0, dp = (height-1) * width * 3;
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for (int i = 0; i < height; i++) {
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for (int j = 0; j < width; j++, dp += 3, sp += 4) {
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if ((clipRect.x <= j) && (clipRect.x + clipRect.width > j) &&
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(clipRect.y <= i) && (clipRect.y + clipRect.height > i)) {
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dst[dp] = src[sp+2]; // R
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dst[dp+1] = src[sp+1]; // G
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dst[dp+2] = src[sp]; // B
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}
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}
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dp -= width * 6;
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}
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}
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} // namespace
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ClientOSRenderer::ClientOSRenderer(bool transparent)
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: transparent_(transparent),
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initialized_(false),
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texture_id_(0),
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view_buffer_(NULL),
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view_buffer_size_(0),
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popup_buffer_(NULL),
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popup_buffer_size_(0),
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view_width_(0),
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view_height_(0),
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spin_x_(0),
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spin_y_(0) {
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}
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ClientOSRenderer::~ClientOSRenderer() {
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Cleanup();
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}
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void ClientOSRenderer::Initialize() {
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if (initialized_)
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return;
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glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
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// Necessary for non-power-of-2 textures to render correctly.
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glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
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if (transparent_) {
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// Alpha blending style.
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glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
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}
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initialized_ = true;
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}
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void ClientOSRenderer::Cleanup() {
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if (view_buffer_) {
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delete [] view_buffer_;
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view_buffer_ = NULL;
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view_buffer_size_ = 0;
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}
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if (popup_buffer_) {
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delete [] popup_buffer_;
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popup_buffer_ = NULL;
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popup_buffer_size_ = 0;
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}
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if (texture_id_ != 0)
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glDeleteTextures(1, &texture_id_);
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}
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void ClientOSRenderer::SetSize(int width, int height) {
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if (!initialized_)
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Initialize();
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// Match GL units to screen coordinates.
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glViewport(0, 0, width, height);
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glMatrixMode(GL_PROJECTION);
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glLoadIdentity();
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glOrtho(0, 0, width, height, 0.1, 100.0);
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if (transparent_) {
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// Enable alpha blending.
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glEnable(GL_BLEND);
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}
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// Enable 2D textures.
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glEnable(GL_TEXTURE_2D);
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GLuint new_texture_id = 0;
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// Create a new texture.
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glGenTextures(1, &new_texture_id);
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ASSERT(new_texture_id != 0);
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glBindTexture(GL_TEXTURE_2D, new_texture_id);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
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// Start with all white contents.
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{
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int size = width * height * (transparent_?4:3);
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unsigned char* buffer = new unsigned char[size];
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memset(buffer, 255, size);
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glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0,
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transparent_?GL_RGBA:GL_RGB, GL_UNSIGNED_BYTE, buffer);
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delete [] buffer;
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}
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if (texture_id_ != 0) {
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// Draw the existing view buffer to the new texture.
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DrawViewBuffer(width, height);
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// Delete the old texture.
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glDeleteTextures(1, &texture_id_);
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}
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texture_id_ = new_texture_id;
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// Disable 2D textures.
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glDisable(GL_TEXTURE_2D);
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if (transparent_) {
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// Disable alpha blending.
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glDisable(GL_BLEND);
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}
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}
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void ClientOSRenderer::Render() {
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ASSERT(initialized_);
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struct {
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float tu, tv;
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float x, y, z;
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} static vertices[] = {
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{0.0f, 0.0f, -1.0f, -1.0f, 0.0f},
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{1.0f, 0.0f, 1.0f, -1.0f, 0.0f},
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{1.0f, 1.0f, 1.0f, 1.0f, 0.0f},
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{0.0f, 1.0f, -1.0f, 1.0f, 0.0f}
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};
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glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
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glMatrixMode(GL_MODELVIEW);
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glLoadIdentity();
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// Draw the background gradient.
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glPushAttrib(GL_ALL_ATTRIB_BITS);
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glBegin(GL_QUADS);
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glColor4f(1.0, 0.0, 0.0, 1.0); // red
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glVertex2f(-1.0, -1.0);
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glVertex2f(1.0, -1.0);
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glColor4f(0.0, 0.0, 1.0, 1.0); // blue
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glVertex2f(1.0, 1.0);
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glVertex2f(-1.0, 1.0);
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glEnd();
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glPopAttrib();
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// Rotate the view based on the mouse spin.
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glRotatef(-spin_x_, 1.0f, 0.0f, 0.0f);
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glRotatef(-spin_y_, 0.0f, 1.0f, 0.0f);
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if (transparent_) {
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// Enable alpha blending.
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glEnable(GL_BLEND);
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}
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// Enable 2D textures.
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glEnable(GL_TEXTURE_2D);
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// Draw the facets with the texture.
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ASSERT(texture_id_ != 0);
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glBindTexture(GL_TEXTURE_2D, texture_id_);
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glInterleavedArrays(GL_T2F_V3F, 0, vertices);
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glDrawArrays(GL_QUADS, 0, 4);
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// Disable 2D textures.
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glDisable(GL_TEXTURE_2D);
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if (transparent_) {
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// Disable alpha blending.
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glDisable(GL_BLEND);
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}
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glFlush();
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}
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void ClientOSRenderer::OnPopupShow(CefRefPtr<CefBrowser> browser,
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bool show) {
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if (!show) {
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// Clear the popup buffer.
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popup_rect_.Set(0, 0, 0, 0);
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if (popup_buffer_) {
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delete [] popup_buffer_;
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popup_buffer_ = NULL;
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popup_buffer_size_ = 0;
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}
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}
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}
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void ClientOSRenderer::OnPopupSize(CefRefPtr<CefBrowser> browser,
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const CefRect& rect) {
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if (rect.width > 0) {
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// Update the popup rectange. It should always be inside the view.
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ASSERT(rect.x + rect.width < view_width_ &&
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rect.y + rect.height < view_height_);
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popup_rect_ = rect;
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}
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}
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void ClientOSRenderer::OnPaint(CefRefPtr<CefBrowser> browser,
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CefRenderHandler::PaintElementType type,
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const CefRenderHandler::RectList& dirtyRects,
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const void* buffer) {
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ASSERT(initialized_);
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// Retrieve the current size of the browser view.
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browser->GetSize(type, view_width_, view_height_);
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if (transparent_) {
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// Enable alpha blending.
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glEnable(GL_BLEND);
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}
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// Enable 2D textures.
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glEnable(GL_TEXTURE_2D);
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ASSERT(texture_id_ != 0);
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glBindTexture(GL_TEXTURE_2D, texture_id_);
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if (type == PET_VIEW) {
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SetBufferSize(view_width_, view_height_, true);
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// Paint the view.
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if (transparent_) {
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CefRenderHandler::RectList::const_iterator i = dirtyRects.begin();
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for (; i != dirtyRects.end(); ++i) {
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ConvertToRGBARect(*i, (unsigned char*)buffer, view_buffer_,
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view_width_, view_height_);
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}
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} else {
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CefRenderHandler::RectList::const_iterator i = dirtyRects.begin();
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for (; i != dirtyRects.end(); ++i) {
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ConvertToRGBRect(*i, (unsigned char*)buffer, view_buffer_,
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view_width_, view_height_);
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}
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}
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// Update the whole texture. This is done for simplicity instead of
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// updating just the dirty region.
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glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, view_width_, view_height_,
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transparent_?GL_RGBA:GL_RGB, GL_UNSIGNED_BYTE, view_buffer_);
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}
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if (popup_rect_.width > 0) {
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if (type == PET_POPUP) {
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// Paint the popup.
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if (transparent_)
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SetRGBA(buffer, popup_rect_.width, popup_rect_.height, false);
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else
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SetRGB(buffer, popup_rect_.width, popup_rect_.height, false);
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}
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if (popup_buffer_) {
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// Update the popup region.
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glTexSubImage2D(GL_TEXTURE_2D, 0, popup_rect_.x,
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view_height_ - popup_rect_.y - popup_rect_.height,
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popup_rect_.width, popup_rect_.height,
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transparent_?GL_RGBA:GL_RGB,
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GL_UNSIGNED_BYTE, popup_buffer_);
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}
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}
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// Disable 2D textures.
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glDisable(GL_TEXTURE_2D);
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if (transparent_) {
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// Disable alpha blending.
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glDisable(GL_BLEND);
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}
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}
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void ClientOSRenderer::SetSpin(float spinX, float spinY) {
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spin_x_ = spinX;
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spin_y_ = spinY;
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}
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void ClientOSRenderer::IncrementSpin(float spinDX, float spinDY) {
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spin_x_ -= spinDX;
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spin_y_ -= spinDY;
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}
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void ClientOSRenderer::SetBufferSize(int width, int height, bool view) {
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int dst_size = width * height * (transparent_?4:3);
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// Allocate a new buffer if necesary.
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if (view) {
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if (dst_size > view_buffer_size_) {
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if (view_buffer_)
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delete [] view_buffer_;
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view_buffer_ = new unsigned char[dst_size];
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view_buffer_size_ = dst_size;
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}
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} else {
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if (dst_size > popup_buffer_size_) {
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if (popup_buffer_)
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delete [] popup_buffer_;
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popup_buffer_ = new unsigned char[dst_size];
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popup_buffer_size_ = dst_size;
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}
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}
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}
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// Set the contents of the RGBA buffer.
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void ClientOSRenderer::SetRGBA(const void* src, int width, int height,
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bool view) {
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SetBufferSize(width, height, view);
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ConvertToRGBA((unsigned char*)src, view?view_buffer_:popup_buffer_, width,
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height);
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}
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// Set the contents of the RGB buffer.
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void ClientOSRenderer::SetRGB(const void* src, int width, int height,
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bool view) {
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SetBufferSize(width, height, view);
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ConvertToRGB((unsigned char*)src, view?view_buffer_:popup_buffer_, width,
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height);
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}
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void ClientOSRenderer::DrawViewBuffer(int max_width, int max_height) {
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if (max_width < view_width_ || max_height < view_height_) {
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// The requested max size is smaller than the current view buffer.
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int width = std::min(max_width, view_width_);
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int height = std::min(max_height, view_height_);
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glPixelStorei(GL_UNPACK_ROW_LENGTH, view_width_);
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glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, width, height,
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transparent_?GL_RGBA:GL_RGB, GL_UNSIGNED_BYTE,
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view_buffer_);
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glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
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} else {
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glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, view_width_, view_height_,
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transparent_?GL_RGBA:GL_RGB, GL_UNSIGNED_BYTE, view_buffer_);
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}
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}
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Block a user