mirror of
https://github.com/chenasraf/webview_cef.git
synced 2026-05-18 01:49:03 +00:00
243 lines
6.8 KiB
C++
243 lines
6.8 KiB
C++
// Copyright (c) 2013 The Chromium Embedded Framework Authors. All rights
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// reserved. Use of this source code is governed by a BSD-style license that
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// can be found in the LICENSE file.
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#include "simple_handler.h"
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#include <sstream>
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#include <string>
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#include <iostream>
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#include "include/base/cef_callback.h"
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#include "include/cef_app.h"
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#include "include/cef_parser.h"
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#include "include/views/cef_browser_view.h"
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#include "include/views/cef_window.h"
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#include "include/wrapper/cef_closure_task.h"
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#include "include/wrapper/cef_helpers.h"
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namespace {
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SimpleHandler* g_instance = nullptr;
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// Returns a data: URI with the specified contents.
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std::string GetDataURI(const std::string& data, const std::string& mime_type) {
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return "data:" + mime_type + ";base64," +
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CefURIEncode(CefBase64Encode(data.data(), data.size()), false)
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.ToString();
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}
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} // namespace
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SimpleHandler::SimpleHandler(bool use_views)
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: use_views_(use_views), is_closing_(false) {
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DCHECK(!g_instance);
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g_instance = this;
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}
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SimpleHandler::~SimpleHandler() {
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g_instance = nullptr;
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}
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// static
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SimpleHandler* SimpleHandler::GetInstance() {
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return g_instance;
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}
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void SimpleHandler::OnTitleChange(CefRefPtr<CefBrowser> browser,
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const CefString& title) {
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CEF_REQUIRE_UI_THREAD();
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if (use_views_) {
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// Set the title of the window using the Views framework.
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CefRefPtr<CefBrowserView> browser_view =
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CefBrowserView::GetForBrowser(browser);
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if (browser_view) {
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CefRefPtr<CefWindow> window = browser_view->GetWindow();
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if (window)
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window->SetTitle(title);
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}
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} else if (!IsChromeRuntimeEnabled()) {
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// Set the title of the window using platform APIs.
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PlatformTitleChange(browser, title);
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}
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}
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void SimpleHandler::OnAfterCreated(CefRefPtr<CefBrowser> browser) {
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CEF_REQUIRE_UI_THREAD();
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// Add to the list of existing browsers.
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browser_list_.push_back(browser);
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}
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bool SimpleHandler::DoClose(CefRefPtr<CefBrowser> browser) {
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CEF_REQUIRE_UI_THREAD();
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// Closing the main window requires special handling. See the DoClose()
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// documentation in the CEF header for a detailed destription of this
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// process.
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if (browser_list_.size() == 1) {
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// Set a flag to indicate that the window close should be allowed.
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is_closing_ = true;
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}
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// Allow the close. For windowed browsers this will result in the OS close
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// event being sent.
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return false;
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}
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void SimpleHandler::OnBeforeClose(CefRefPtr<CefBrowser> browser) {
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CEF_REQUIRE_UI_THREAD();
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// Remove from the list of existing browsers.
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BrowserList::iterator bit = browser_list_.begin();
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for (; bit != browser_list_.end(); ++bit) {
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if ((*bit)->IsSame(browser)) {
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browser_list_.erase(bit);
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break;
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}
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}
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if (browser_list_.empty()) {
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// All browser windows have closed. Quit the application message loop.
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CefQuitMessageLoop();
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}
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}
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void SimpleHandler::OnLoadError(CefRefPtr<CefBrowser> browser,
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CefRefPtr<CefFrame> frame,
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ErrorCode errorCode,
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const CefString& errorText,
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const CefString& failedUrl) {
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CEF_REQUIRE_UI_THREAD();
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// Allow Chrome to show the error page.
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if (IsChromeRuntimeEnabled())
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return;
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// Don't display an error for downloaded files.
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if (errorCode == ERR_ABORTED)
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return;
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// Display a load error message using a data: URI.
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std::stringstream ss;
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ss << "<html><body bgcolor=\"white\">"
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"<h2>Failed to load URL "
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<< std::string(failedUrl) << " with error " << std::string(errorText)
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<< " (" << errorCode << ").</h2></body></html>";
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frame->LoadURL(GetDataURI(ss.str(), "text/html"));
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}
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void SimpleHandler::CloseAllBrowsers(bool force_close) {
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if (!CefCurrentlyOn(TID_UI)) {
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// Execute on the UI thread.
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// CefPostTask(TID_UI, base::BindOnce(&SimpleHandler::CloseAllBrowsers, this,
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// force_close));
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return;
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}
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if (browser_list_.empty())
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return;
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BrowserList::const_iterator it = browser_list_.begin();
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for (; it != browser_list_.end(); ++it)
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(*it)->GetHost()->CloseBrowser(force_close);
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}
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// static
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bool SimpleHandler::IsChromeRuntimeEnabled() {
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static int value = -1;
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if (value == -1) {
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CefRefPtr<CefCommandLine> command_line =
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CefCommandLine::GetGlobalCommandLine();
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value = command_line->HasSwitch("enable-chrome-runtime") ? 1 : 0;
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}
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return value == 1;
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}
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void SimpleHandler::scrollUp()
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{
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BrowserList::const_iterator it = browser_list_.begin();
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if (it != browser_list_.end()) {
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CefMouseEvent ev;
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ev.x = 500;
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ev.y = 500;
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(*it)->GetHost()->SendMouseWheelEvent(ev, 0, -100);
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}
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}
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void SimpleHandler::scrollDown()
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{
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BrowserList::const_iterator it = browser_list_.begin();
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if (it != browser_list_.end()) {
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CefMouseEvent ev;
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ev.x = 500;
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ev.y = 500;
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(*it)->GetHost()->SendMouseWheelEvent(ev, 0, 100);
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}
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}
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void SimpleHandler::changeSize(int w, int h)
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{
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this->width = w;
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this->height = h;
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BrowserList::const_iterator it = browser_list_.begin();
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if (it != browser_list_.end()) {
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(*it)->GetHost()->WasResized();
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}
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}
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void SimpleHandler::cursorClick(int x, int y, bool up)
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{
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BrowserList::const_iterator it = browser_list_.begin();
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if (it != browser_list_.end()) {
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CefMouseEvent ev;
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ev.x = x;
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ev.y = y;
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(*it)->GetHost()->SendMouseClickEvent(ev, CefBrowserHost::MouseButtonType::MBT_LEFT, up, 1);
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}
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}
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void SimpleHandler::loadUrl(std::string url)
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{
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BrowserList::const_iterator it = browser_list_.begin();
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if (it != browser_list_.end()) {
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(*it)->GetMainFrame()->LoadURL(url);
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}
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}
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void SimpleHandler::GetViewRect(CefRefPtr<CefBrowser> browser, CefRect &rect) {
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CEF_REQUIRE_UI_THREAD();
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rect.x = rect.y = 0;
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if (width < 1) {
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rect.width = 1;
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} else {
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rect.width = width;
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}
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if (height < 1) {
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rect.height = 1;
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} else {
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rect.height = height;
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}
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}
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bool SimpleHandler::GetScreenInfo(CefRefPtr<CefBrowser> browser, CefScreenInfo& screen_info) {
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//todo: hi dpi support
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screen_info.device_scale_factor = 1;
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return false;
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}
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void SimpleHandler::OnPaint(CefRefPtr<CefBrowser> browser, CefRenderHandler::PaintElementType type,
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const CefRenderHandler::RectList &dirtyRects, const void *buffer, int w, int h) {
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onPaintCallback(buffer, w, h);
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}
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void SimpleHandler::PlatformTitleChange(CefRefPtr<CefBrowser> browser,
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const CefString& title) {
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}
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