// Copyright (c) 2012 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 "cefclient/osrenderer.h" #include "cefclient/util.h" #if defined(OS_WIN) #include #include #elif defined(OS_MACOSX) #include #else #error Platform is not supported. #endif #ifndef GL_BGR #define GL_BGR 0x80E0 #endif #ifndef GL_BGRA #define GL_BGRA 0x80E1 #endif #ifndef GL_UNSIGNED_INT_8_8_8_8_REV #define GL_UNSIGNED_INT_8_8_8_8_REV 0x8367 #endif ClientOSRenderer::ClientOSRenderer(bool transparent) : transparent_(transparent), initialized_(false), texture_id_(0), view_width_(0), view_height_(0), spin_x_(0), spin_y_(0) { } ClientOSRenderer::~ClientOSRenderer() { Cleanup(); } void ClientOSRenderer::Initialize() { if (initialized_) return; glHint(GL_POLYGON_SMOOTH_HINT, GL_NICEST); glClearColor(0.0f, 0.0f, 0.0f, 1.0f); // Necessary for non-power-of-2 textures to render correctly. glPixelStorei(GL_UNPACK_ALIGNMENT, 1); // Create the texture. glGenTextures(1, &texture_id_); ASSERT(texture_id_ != 0); glBindTexture(GL_TEXTURE_2D, texture_id_); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE); initialized_ = true; } void ClientOSRenderer::Cleanup() { if (texture_id_ != 0) glDeleteTextures(1, &texture_id_); } void ClientOSRenderer::Render() { if (view_width_ == 0 || view_height_ == 0) return; ASSERT(initialized_); struct { float tu, tv; float x, y, z; } static vertices[] = { {0.0f, 1.0f, -1.0f, -1.0f, 0.0f}, {1.0f, 1.0f, 1.0f, -1.0f, 0.0f}, {1.0f, 0.0f, 1.0f, 1.0f, 0.0f}, {0.0f, 0.0f, -1.0f, 1.0f, 0.0f} }; glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); glMatrixMode(GL_MODELVIEW); glLoadIdentity(); // Match GL units to screen coordinates. glViewport(0, 0, view_width_, view_height_); glMatrixMode(GL_PROJECTION); glLoadIdentity(); glOrtho(0, 0, view_width_, view_height_, 0.1, 100.0); // Draw the background gradient. glPushAttrib(GL_ALL_ATTRIB_BITS); glBegin(GL_QUADS); glColor4f(1.0, 0.0, 0.0, 1.0); // red glVertex2f(-1.0, -1.0); glVertex2f(1.0, -1.0); glColor4f(0.0, 0.0, 1.0, 1.0); // blue glVertex2f(1.0, 1.0); glVertex2f(-1.0, 1.0); glEnd(); glPopAttrib(); // Rotate the view based on the mouse spin. if (spin_x_ != 0) glRotatef(-spin_x_, 1.0f, 0.0f, 0.0f); if (spin_y_ != 0) glRotatef(-spin_y_, 0.0f, 1.0f, 0.0f); if (transparent_) { // Alpha blending style. Texture values have premultiplied alpha. glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA); // Enable alpha blending. glEnable(GL_BLEND); } // Enable 2D textures. glEnable(GL_TEXTURE_2D); // Draw the facets with the texture. ASSERT(texture_id_ != 0); glBindTexture(GL_TEXTURE_2D, texture_id_); glInterleavedArrays(GL_T2F_V3F, 0, vertices); glDrawArrays(GL_QUADS, 0, 4); // Disable 2D textures. glDisable(GL_TEXTURE_2D); if (transparent_) { // Disable alpha blending. glDisable(GL_BLEND); } } void ClientOSRenderer::OnPopupShow(CefRefPtr browser, bool show) { if (!show) { // Invalidate the previous popup rectangle so that it will be repainted. browser->GetHost()->Invalidate(popup_rect_); // Clear the popup rectangle. popup_rect_.Set(0, 0, 0, 0); } } void ClientOSRenderer::OnPopupSize(CefRefPtr browser, const CefRect& rect) { if (rect.width > 0 && rect.height > 0) popup_rect_ = rect; } void ClientOSRenderer::OnPaint(CefRefPtr browser, CefRenderHandler::PaintElementType type, const CefRenderHandler::RectList& dirtyRects, const void* buffer, int width, int height) { if (!initialized_) Initialize(); if (transparent_) { // Enable alpha blending. glEnable(GL_BLEND); } // Enable 2D textures. glEnable(GL_TEXTURE_2D); ASSERT(texture_id_ != 0); glBindTexture(GL_TEXTURE_2D, texture_id_); if (type == PET_VIEW) { int old_width = view_width_; int old_height = view_height_; view_width_ = width; view_height_ = height; glPixelStorei(GL_UNPACK_ROW_LENGTH, view_width_); if (old_width != view_width_ || old_height != view_height_) { // Update/resize the whole texture. glPixelStorei(GL_UNPACK_SKIP_PIXELS, 0); glPixelStorei(GL_UNPACK_SKIP_ROWS, 0); glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, view_width_, view_height_, 0, GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV, buffer); } else { // Update just the dirty rectangles. CefRenderHandler::RectList::const_iterator i = dirtyRects.begin(); for (; i != dirtyRects.end(); ++i) { const CefRect& rect = *i; glPixelStorei(GL_UNPACK_SKIP_PIXELS, rect.x); glPixelStorei(GL_UNPACK_SKIP_ROWS, rect.y); glTexSubImage2D(GL_TEXTURE_2D, 0, rect.x, rect.y, rect.width, rect.height, GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV, buffer); } } } else if (type == PET_POPUP && popup_rect_.width > 0 && popup_rect_.height > 0) { int skip_pixels = 0, x = popup_rect_.x; int skip_rows = 0, y = popup_rect_.y; int width = popup_rect_.width; int height = popup_rect_.height; // Adjust the popup to fit inside the view. if (x < 0) { skip_pixels = -x; x = 0; } if (y < 0) { skip_rows = -y; y = 0; } if (x + width > view_width_) width -= x + width - view_width_; if (y + height > view_height_) height -= y + height - view_height_; // Update the popup rectangle. glPixelStorei(GL_UNPACK_ROW_LENGTH, popup_rect_.width); glPixelStorei(GL_UNPACK_SKIP_PIXELS, skip_pixels); glPixelStorei(GL_UNPACK_SKIP_ROWS, skip_rows); glTexSubImage2D(GL_TEXTURE_2D, 0, x, y, width, height, GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV, buffer); } // Disable 2D textures. glDisable(GL_TEXTURE_2D); if (transparent_) { // Disable alpha blending. glDisable(GL_BLEND); } } void ClientOSRenderer::SetSpin(float spinX, float spinY) { spin_x_ = spinX; spin_y_ = spinY; } void ClientOSRenderer::IncrementSpin(float spinDX, float spinDY) { spin_x_ -= spinDX; spin_y_ -= spinDY; }