--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/WebKit/win/WebNodeHighlight.cpp Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,293 @@
+/*
+ * Copyright (C) 2007 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of
+ * its contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "config.h"
+#include "WebNodeHighlight.h"
+
+#include "WebView.h"
+#pragma warning(push, 0)
+#include <WebCore/BitmapInfo.h>
+#include <WebCore/Color.h>
+#include <WebCore/GraphicsContext.h>
+#include <WebCore/InspectorController.h>
+#include <WebCore/Page.h>
+#include <WebCore/WindowMessageBroadcaster.h>
+#pragma warning(pop)
+#include <wtf/OwnPtr.h>
+#include <wtf/HashSet.h>
+
+using namespace WebCore;
+
+static LPCTSTR kOverlayWindowClassName = TEXT("WebNodeHighlightWindowClass");
+static ATOM registerOverlayClass();
+static LPCTSTR kWebNodeHighlightPointerProp = TEXT("WebNodeHighlightPointer");
+
+WebNodeHighlight::WebNodeHighlight(WebView* webView)
+ : m_inspectedWebView(webView)
+ , m_overlay(0)
+ , m_observedWindow(0)
+ , m_showsWhileWebViewIsVisible(false)
+{
+ m_inspectedWebView->viewWindow(reinterpret_cast<OLE_HANDLE*>(&m_inspectedWebViewWindow));
+}
+
+WebNodeHighlight::~WebNodeHighlight()
+{
+ if (m_observedWindow)
+ WindowMessageBroadcaster::removeListener(m_observedWindow, this);
+ if (m_inspectedWebViewWindow)
+ WindowMessageBroadcaster::removeListener(m_inspectedWebViewWindow, this);
+
+ if (m_overlay)
+ ::DestroyWindow(m_overlay);
+}
+
+void WebNodeHighlight::setShowsWhileWebViewIsVisible(bool shows)
+{
+ if (m_showsWhileWebViewIsVisible == shows)
+ return;
+ m_showsWhileWebViewIsVisible = shows;
+
+ if (!m_showsWhileWebViewIsVisible) {
+ hide();
+ return;
+ }
+
+ bool webViewVisible = isWebViewVisible();
+
+ if (isShowing() == webViewVisible)
+ return;
+
+ if (webViewVisible)
+ show();
+ else
+ hide();
+}
+
+bool WebNodeHighlight::isWebViewVisible() const
+{
+ if (!m_inspectedWebViewWindow)
+ return false;
+
+ return IsWindowVisible(m_inspectedWebViewWindow);
+}
+
+void WebNodeHighlight::show()
+{
+ if (!m_overlay) {
+ registerOverlayClass();
+
+ m_overlay = ::CreateWindowEx(WS_EX_LAYERED | WS_EX_TOOLWINDOW | WS_EX_TRANSPARENT, kOverlayWindowClassName, 0, WS_POPUP,
+ 0, 0, 0, 0,
+ m_inspectedWebViewWindow, 0, 0, 0);
+ if (!m_overlay)
+ return;
+
+ ::SetProp(m_overlay, kWebNodeHighlightPointerProp, reinterpret_cast<HANDLE>(this));
+
+ m_observedWindow = GetAncestor(m_inspectedWebViewWindow, GA_ROOT);
+ WindowMessageBroadcaster::addListener(m_observedWindow, this);
+ WindowMessageBroadcaster::addListener(m_inspectedWebViewWindow, this);
+ }
+
+ ASSERT(m_showsWhileWebViewIsVisible);
+
+ update();
+ SetWindowPos(m_overlay, 0, 0, 0, 0, 0, SWP_SHOWWINDOW | SWP_NOMOVE | SWP_NOSIZE | SWP_NOZORDER | SWP_NOACTIVATE);
+}
+
+void WebNodeHighlight::hide()
+{
+ if (m_overlay)
+ ::ShowWindow(m_overlay, SW_HIDE);
+}
+
+bool WebNodeHighlight::isShowing() const
+{
+ return m_overlay && ::IsWindowVisible(m_overlay);
+}
+
+void WebNodeHighlight::update()
+{
+ ASSERT(m_overlay);
+
+ HDC hdc = ::CreateCompatibleDC(::GetDC(m_overlay));
+ if (!hdc)
+ return;
+
+ RECT webViewRect;
+ ::GetWindowRect(m_inspectedWebViewWindow, &webViewRect);
+
+ SIZE size;
+ size.cx = webViewRect.right - webViewRect.left;
+ size.cy = webViewRect.bottom - webViewRect.top;
+
+ BitmapInfo bitmapInfo = BitmapInfo::createBottomUp(IntSize(size));
+
+ void* pixels = 0;
+ OwnPtr<HBITMAP> hbmp(::CreateDIBSection(hdc, &bitmapInfo, DIB_RGB_COLORS, &pixels, 0, 0));
+
+ ::SelectObject(hdc, hbmp.get());
+
+ GraphicsContext context(hdc);
+
+ m_inspectedWebView->page()->inspectorController()->drawNodeHighlight(context);
+
+ BLENDFUNCTION bf;
+ bf.BlendOp = AC_SRC_OVER;
+ bf.BlendFlags = 0;
+ bf.SourceConstantAlpha = 255;
+ bf.AlphaFormat = AC_SRC_ALPHA;
+
+ POINT srcPoint;
+ srcPoint.x = 0;
+ srcPoint.y = 0;
+
+ POINT dstPoint;
+ dstPoint.x = webViewRect.left;
+ dstPoint.y = webViewRect.top;
+
+ ::UpdateLayeredWindow(m_overlay, ::GetDC(0), &dstPoint, &size, hdc, &srcPoint, 0, &bf, ULW_ALPHA);
+
+ ::DeleteDC(hdc);
+}
+
+void WebNodeHighlight::placeBehindWindow(HWND window)
+{
+ ASSERT(m_overlay);
+ SetWindowPos(m_overlay, window, 0, 0, 0, 0, SWP_NOMOVE | SWP_NOSIZE | SWP_NOACTIVATE);
+}
+
+static ATOM registerOverlayClass()
+{
+ static bool haveRegisteredWindowClass = false;
+
+ if (haveRegisteredWindowClass)
+ return true;
+
+ WNDCLASSEX wcex;
+
+ wcex.cbSize = sizeof(WNDCLASSEX);
+
+ wcex.style = 0;
+ wcex.lpfnWndProc = OverlayWndProc;
+ wcex.cbClsExtra = 0;
+ wcex.cbWndExtra = 0;
+ wcex.hInstance = 0;
+ wcex.hIcon = 0;
+ wcex.hCursor = LoadCursor(0, IDC_ARROW);
+ wcex.hbrBackground = 0;
+ wcex.lpszMenuName = 0;
+ wcex.lpszClassName = kOverlayWindowClassName;
+ wcex.hIconSm = 0;
+
+ haveRegisteredWindowClass = true;
+
+ return ::RegisterClassEx(&wcex);
+}
+
+LRESULT CALLBACK OverlayWndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
+{
+ WebNodeHighlight* highlight = reinterpret_cast<WebNodeHighlight*>(::GetProp(hwnd, kWebNodeHighlightPointerProp));
+ if (!highlight)
+ return ::DefWindowProc(hwnd, msg, wParam, lParam);
+
+ return ::DefWindowProc(hwnd, msg, wParam, lParam);
+}
+
+void WebNodeHighlight::onWebViewShowWindow(bool showing)
+{
+ if (!m_showsWhileWebViewIsVisible)
+ return;
+
+ if (isShowing() == showing)
+ return;
+
+ if (showing)
+ show();
+ else
+ hide();
+}
+
+void WebNodeHighlight::onWebViewWindowPosChanged(WINDOWPOS* windowPos)
+{
+ bool sizing = !(windowPos->flags & SWP_NOSIZE);
+
+ if (!sizing)
+ return;
+
+ if (!isShowing())
+ return;
+
+ update();
+}
+
+void WebNodeHighlight::onRootWindowPosChanged(WINDOWPOS* windowPos)
+{
+ bool moving = !(windowPos->flags & SWP_NOMOVE);
+ bool sizing = !(windowPos->flags & SWP_NOSIZE);
+
+ if (!moving)
+ return;
+
+ // Size changes are handled by onWebViewWindowPosChanged.
+ if (sizing)
+ return;
+
+ if (!isShowing())
+ return;
+
+ update();
+}
+
+void WebNodeHighlight::windowReceivedMessage(HWND window, UINT msg, WPARAM wParam, LPARAM lParam)
+{
+ if (window == m_inspectedWebViewWindow) {
+ switch (msg) {
+ case WM_SHOWWINDOW:
+ onWebViewShowWindow(wParam);
+ break;
+ case WM_WINDOWPOSCHANGED:
+ onWebViewWindowPosChanged(reinterpret_cast<WINDOWPOS*>(lParam));
+ break;
+ default:
+ break;
+ }
+
+ return;
+ }
+
+ ASSERT(window == m_observedWindow);
+ switch (msg) {
+ case WM_WINDOWPOSCHANGED:
+ onRootWindowPosChanged(reinterpret_cast<WINDOWPOS*>(lParam));
+ break;
+ default:
+ break;
+ }
+}