diff options
Diffstat (limited to 'WebKit/win/WebNodeHighlight.cpp')
| -rw-r--r-- | WebKit/win/WebNodeHighlight.cpp | 205 |
1 files changed, 205 insertions, 0 deletions
diff --git a/WebKit/win/WebNodeHighlight.cpp b/WebKit/win/WebNodeHighlight.cpp new file mode 100644 index 0000000..d2ba30d --- /dev/null +++ b/WebKit/win/WebNodeHighlight.cpp @@ -0,0 +1,205 @@ +/* + * 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/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_inspectedWebViewWindow(0) + , m_overlay(0) + , m_observedWindow(0) +{ +} + +WebNodeHighlight::~WebNodeHighlight() +{ + if (m_observedWindow) + WindowMessageBroadcaster::removeListener(m_observedWindow, this); + + if (m_overlay) + ::DestroyWindow(m_overlay); +} + +void WebNodeHighlight::show() +{ + if (!m_overlay) { + if (FAILED(m_inspectedWebView->viewWindow(reinterpret_cast<OLE_HANDLE*>(&m_inspectedWebViewWindow))) || !IsWindow(m_inspectedWebViewWindow)) + return; + + registerOverlayClass(); + + m_overlay = ::CreateWindowEx(WS_EX_LAYERED | WS_EX_TOOLWINDOW, kOverlayWindowClassName, 0, WS_POPUP | WS_VISIBLE, + 0, 0, 0, 0, + m_inspectedWebViewWindow, 0, 0, 0); + if (!m_overlay) + return; + + ::SetProp(m_overlay, kWebNodeHighlightPointerProp, reinterpret_cast<HANDLE>(this)); + ::SetWindowPos(m_overlay, m_inspectedWebViewWindow, 0, 0, 0, 0, SWP_NOMOVE | SWP_NOSIZE); + + m_observedWindow = GetAncestor(m_inspectedWebViewWindow, GA_ROOT); + WindowMessageBroadcaster::addListener(m_observedWindow, this); + } + + updateWindow(); + ::ShowWindow(m_overlay, SW_SHOW); +} + +void WebNodeHighlight::hide() +{ + if (m_overlay) + ::ShowWindow(m_overlay, SW_HIDE); +} + +bool WebNodeHighlight::visible() const +{ + return m_overlay && ::IsWindowVisible(m_overlay); +} + +void WebNodeHighlight::updateWindow() +{ + 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.bmiHeader.biSize = sizeof(BITMAPINFOHEADER); + bitmapInfo.bmiHeader.biWidth = size.cx; + bitmapInfo.bmiHeader.biHeight = -size.cy; + bitmapInfo.bmiHeader.biPlanes = 1; + bitmapInfo.bmiHeader.biBitCount = 32; + bitmapInfo.bmiHeader.biCompression = BI_RGB; + bitmapInfo.bmiHeader.biSizeImage = 0; + bitmapInfo.bmiHeader.biXPelsPerMeter = 0; + bitmapInfo.bmiHeader.biYPelsPerMeter = 0; + bitmapInfo.bmiHeader.biClrUsed = 0; + bitmapInfo.bmiHeader.biClrImportant = 0; + + 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); +} + +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::windowReceivedMessage(HWND, UINT msg, WPARAM, LPARAM) +{ + switch (msg) { + case WM_WINDOWPOSCHANGED: + if (visible()) + updateWindow(); + break; + default: + break; + } +} |