diff options
Diffstat (limited to 'src/widgets/platforms/win/qpixmap_win.cpp')
| -rw-r--r-- | src/widgets/platforms/win/qpixmap_win.cpp | 477 |
1 files changed, 477 insertions, 0 deletions
diff --git a/src/widgets/platforms/win/qpixmap_win.cpp b/src/widgets/platforms/win/qpixmap_win.cpp new file mode 100644 index 0000000000..9c14ac7726 --- /dev/null +++ b/src/widgets/platforms/win/qpixmap_win.cpp @@ -0,0 +1,477 @@ +/**************************************************************************** +** +** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the QtGui module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the Technology Preview License Agreement accompanying +** this package. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain additional +** rights. These rights are described in the Nokia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** If you have questions regarding the use of this file, please contact +** Nokia at qt-info@nokia.com. +** +** +** +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "qpixmap.h" +#include "qpixmap_raster_p.h" + +#include "qbitmap.h" +#include "qimage.h" +#include "qwidget.h" +#include "qpainter.h" +#include "qdatastream.h" +#include "qbuffer.h" +#include "qapplication.h" +#include "qevent.h" +#include "qfile.h" +#include "qfileinfo.h" +#include "qdatetime.h" +#include "qpixmapcache.h" +#include "qimagereader.h" +#include "qimagewriter.h" +#include "qdebug.h" +#include "qt_windows.h" + +#if defined(Q_WS_WINCE) +#include <winbase.h> +#include "qguifunctions_wince.h" +extern bool qt_wince_is_high_dpi(); +extern bool qt_wince_is_pocket_pc(); +#endif + +#ifndef CAPTUREBLT +#define CAPTUREBLT ((DWORD)0x40000000) +#endif + +QT_BEGIN_NAMESPACE + +QPixmap QPixmap::grabWindow(WId winId, int x, int y, int w, int h ) +{ + RECT r; + GetClientRect(winId, &r); + + if (w < 0) w = r.right - r.left; + if (h < 0) h = r.bottom - r.top; + +#ifdef Q_WS_WINCE_WM + if (qt_wince_is_pocket_pc()) { + QWidget *widget = QWidget::find(winId); + if (qobject_cast<QDesktopWidget *>(widget)) { + RECT rect = {0,0,0,0}; + AdjustWindowRectEx(&rect, WS_BORDER | WS_CAPTION, FALSE, 0); + int magicNumber = qt_wince_is_high_dpi() ? 4 : 2; + y += rect.top - magicNumber; + } + } +#endif + + // Create and setup bitmap + HDC display_dc = GetDC(0); + HDC bitmap_dc = CreateCompatibleDC(display_dc); + HBITMAP bitmap = CreateCompatibleBitmap(display_dc, w, h); + HGDIOBJ null_bitmap = SelectObject(bitmap_dc, bitmap); + + // copy data + HDC window_dc = GetDC(winId); + BitBlt(bitmap_dc, 0, 0, w, h, window_dc, x, y, SRCCOPY +#ifndef Q_WS_WINCE + | CAPTUREBLT +#endif + ); + + // clean up all but bitmap + ReleaseDC(winId, window_dc); + SelectObject(bitmap_dc, null_bitmap); + DeleteDC(bitmap_dc); + + QPixmap pixmap = QPixmap::fromWinHBITMAP(bitmap); + + DeleteObject(bitmap); + ReleaseDC(0, display_dc); + + return pixmap; +} + +HBITMAP QPixmap::toWinHBITMAP(HBitmapFormat format) const +{ + if (isNull()) + return 0; + + HBITMAP bitmap = 0; + if (data->classId() == QPixmapData::RasterClass) { + QRasterPixmapData* d = static_cast<QRasterPixmapData*>(data.data()); + int w = d->image.width(); + int h = d->image.height(); + + HDC display_dc = GetDC(0); + + // Define the header + BITMAPINFO bmi; + memset(&bmi, 0, sizeof(bmi)); + bmi.bmiHeader.biSize = sizeof(BITMAPINFOHEADER); + bmi.bmiHeader.biWidth = w; + bmi.bmiHeader.biHeight = -h; + bmi.bmiHeader.biPlanes = 1; + bmi.bmiHeader.biBitCount = 32; + bmi.bmiHeader.biCompression = BI_RGB; + bmi.bmiHeader.biSizeImage = w * h * 4; + + // Create the pixmap + uchar *pixels = 0; + bitmap = CreateDIBSection(display_dc, &bmi, DIB_RGB_COLORS, (void **) &pixels, 0, 0); + ReleaseDC(0, display_dc); + if (!bitmap) { + qErrnoWarning("QPixmap::toWinHBITMAP(), failed to create dibsection"); + return 0; + } + if (!pixels) { + qErrnoWarning("QPixmap::toWinHBITMAP(), did not allocate pixel data"); + return 0; + } + + // Copy over the data + QImage::Format imageFormat = QImage::Format_ARGB32; + if (format == NoAlpha) + imageFormat = QImage::Format_RGB32; + else if (format == PremultipliedAlpha) + imageFormat = QImage::Format_ARGB32_Premultiplied; + const QImage image = d->image.convertToFormat(imageFormat); + int bytes_per_line = w * 4; + for (int y=0; y<h; ++y) + memcpy(pixels + y * bytes_per_line, image.scanLine(y), bytes_per_line); + + } else { + QPixmapData *data = new QRasterPixmapData(depth() == 1 ? + QPixmapData::BitmapType : QPixmapData::PixmapType); + data->fromImage(toImage(), Qt::AutoColor); + return QPixmap(data).toWinHBITMAP(format); + } + return bitmap; +} + +QPixmap QPixmap::fromWinHBITMAP(HBITMAP bitmap, HBitmapFormat format) +{ + // Verify size + BITMAP bitmap_info; + memset(&bitmap_info, 0, sizeof(BITMAP)); + + int res = GetObject(bitmap, sizeof(BITMAP), &bitmap_info); + if (!res) { + qErrnoWarning("QPixmap::fromWinHBITMAP(), failed to get bitmap info"); + return QPixmap(); + } + int w = bitmap_info.bmWidth; + int h = bitmap_info.bmHeight; + + BITMAPINFO bmi; + memset(&bmi, 0, sizeof(bmi)); + bmi.bmiHeader.biSize = sizeof(BITMAPINFOHEADER); + bmi.bmiHeader.biWidth = w; + bmi.bmiHeader.biHeight = -h; + bmi.bmiHeader.biPlanes = 1; + bmi.bmiHeader.biBitCount = 32; + bmi.bmiHeader.biCompression = BI_RGB; + bmi.bmiHeader.biSizeImage = w * h * 4; + + QImage result; + // Get bitmap bits + uchar *data = (uchar *) qMalloc(bmi.bmiHeader.biSizeImage); + + HDC display_dc = GetDC(0); + if (GetDIBits(display_dc, bitmap, 0, h, data, &bmi, DIB_RGB_COLORS)) { + + QImage::Format imageFormat = QImage::Format_ARGB32_Premultiplied; + uint mask = 0; + if (format == NoAlpha) { + imageFormat = QImage::Format_RGB32; + mask = 0xff000000; + } + + // Create image and copy data into image. + QImage image(w, h, imageFormat); + if (!image.isNull()) { // failed to alloc? + int bytes_per_line = w * sizeof(QRgb); + for (int y=0; y<h; ++y) { + QRgb *dest = (QRgb *) image.scanLine(y); + const QRgb *src = (const QRgb *) (data + y * bytes_per_line); + for (int x=0; x<w; ++x) { + const uint pixel = src[x]; + if ((pixel & 0xff000000) == 0 && (pixel & 0x00ffffff) != 0) + dest[x] = pixel | 0xff000000; + else + dest[x] = pixel | mask; + } + } + } + result = image; + } else { + qWarning("QPixmap::fromWinHBITMAP(), failed to get bitmap bits"); + } + ReleaseDC(0, display_dc); + qFree(data); + return fromImage(result); +} + +HBITMAP qt_createIconMask(const QBitmap &bitmap) +{ + QImage bm = bitmap.toImage().convertToFormat(QImage::Format_Mono); + int w = bm.width(); + int h = bm.height(); + int bpl = ((w+15)/16)*2; // bpl, 16 bit alignment + uchar *bits = new uchar[bpl*h]; + bm.invertPixels(); + for (int y=0; y<h; y++) + memcpy(bits+y*bpl, bm.scanLine(y), bpl); + HBITMAP hbm = CreateBitmap(w, h, 1, 1, bits); + delete [] bits; + return hbm; +} + +HICON QPixmap::toWinHICON() const +{ + QBitmap maskBitmap = mask(); + if (maskBitmap.isNull()) { + maskBitmap= QBitmap(size()); + maskBitmap.fill(Qt::color1); + } + + ICONINFO ii; + ii.fIcon = true; + ii.hbmMask = qt_createIconMask(maskBitmap); + ii.hbmColor = toWinHBITMAP(QPixmap::Alpha); + ii.xHotspot = 0; + ii.yHotspot = 0; + + HICON hIcon = CreateIconIndirect(&ii); + + DeleteObject(ii.hbmColor); + DeleteObject(ii.hbmMask); + + return hIcon; +} + +#ifdef Q_WS_WIN +#ifndef Q_WS_WINCE + +static QImage qt_fromWinHBITMAP(HDC hdc, HBITMAP bitmap, int w, int h) +{ + BITMAPINFO bmi; + memset(&bmi, 0, sizeof(bmi)); + bmi.bmiHeader.biSize = sizeof(BITMAPINFOHEADER); + bmi.bmiHeader.biWidth = w; + bmi.bmiHeader.biHeight = -h; + bmi.bmiHeader.biPlanes = 1; + bmi.bmiHeader.biBitCount = 32; + bmi.bmiHeader.biCompression = BI_RGB; + bmi.bmiHeader.biSizeImage = w * h * 4; + + QImage image(w, h, QImage::Format_ARGB32_Premultiplied); + if (image.isNull()) + return image; + + // Get bitmap bits + uchar *data = (uchar *) qMalloc(bmi.bmiHeader.biSizeImage); + + if (GetDIBits(hdc, bitmap, 0, h, data, &bmi, DIB_RGB_COLORS)) { + // Create image and copy data into image. + for (int y=0; y<h; ++y) { + void *dest = (void *) image.scanLine(y); + void *src = data + y * image.bytesPerLine(); + memcpy(dest, src, image.bytesPerLine()); + } + } else { + qWarning("qt_fromWinHBITMAP(), failed to get bitmap bits"); + } + qFree(data); + + return image; +} + +QPixmap QPixmap::fromWinHICON(HICON icon) +{ + bool foundAlpha = false; + HDC screenDevice = GetDC(0); + HDC hdc = CreateCompatibleDC(screenDevice); + ReleaseDC(0, screenDevice); + + ICONINFO iconinfo; + bool result = GetIconInfo(icon, &iconinfo); //x and y Hotspot describes the icon center + if (!result) + qWarning("QPixmap::fromWinHICON(), failed to GetIconInfo()"); + + int w = iconinfo.xHotspot * 2; + int h = iconinfo.yHotspot * 2; + + BITMAPINFOHEADER bitmapInfo; + bitmapInfo.biSize = sizeof(BITMAPINFOHEADER); + bitmapInfo.biWidth = w; + bitmapInfo.biHeight = h; + bitmapInfo.biPlanes = 1; + bitmapInfo.biBitCount = 32; + bitmapInfo.biCompression = BI_RGB; + bitmapInfo.biSizeImage = 0; + bitmapInfo.biXPelsPerMeter = 0; + bitmapInfo.biYPelsPerMeter = 0; + bitmapInfo.biClrUsed = 0; + bitmapInfo.biClrImportant = 0; + DWORD* bits; + + HBITMAP winBitmap = CreateDIBSection(hdc, (BITMAPINFO*)&bitmapInfo, DIB_RGB_COLORS, (VOID**)&bits, NULL, 0); + HGDIOBJ oldhdc = (HBITMAP)SelectObject(hdc, winBitmap); + DrawIconEx( hdc, 0, 0, icon, iconinfo.xHotspot * 2, iconinfo.yHotspot * 2, 0, 0, DI_NORMAL); + QImage image = qt_fromWinHBITMAP(hdc, winBitmap, w, h); + + for (int y = 0 ; y < h && !foundAlpha ; y++) { + QRgb *scanLine= reinterpret_cast<QRgb *>(image.scanLine(y)); + for (int x = 0; x < w ; x++) { + if (qAlpha(scanLine[x]) != 0) { + foundAlpha = true; + break; + } + } + } + if (!foundAlpha) { + //If no alpha was found, we use the mask to set alpha values + DrawIconEx( hdc, 0, 0, icon, w, h, 0, 0, DI_MASK); + QImage mask = qt_fromWinHBITMAP(hdc, winBitmap, w, h); + + for (int y = 0 ; y < h ; y++){ + QRgb *scanlineImage = reinterpret_cast<QRgb *>(image.scanLine(y)); + QRgb *scanlineMask = mask.isNull() ? 0 : reinterpret_cast<QRgb *>(mask.scanLine(y)); + for (int x = 0; x < w ; x++){ + if (scanlineMask && qRed(scanlineMask[x]) != 0) + scanlineImage[x] = 0; //mask out this pixel + else + scanlineImage[x] |= 0xff000000; // set the alpha channel to 255 + } + } + } + //dispose resources created by iconinfo call + DeleteObject(iconinfo.hbmMask); + DeleteObject(iconinfo.hbmColor); + + SelectObject(hdc, oldhdc); //restore state + DeleteObject(winBitmap); + DeleteDC(hdc); + return QPixmap::fromImage(image); +} +#else //ifndef Q_WS_WINCE +QPixmap QPixmap::fromWinHICON(HICON icon) +{ + HDC screenDevice = GetDC(0); + HDC hdc = CreateCompatibleDC(screenDevice); + ReleaseDC(0, screenDevice); + + ICONINFO iconinfo; + bool result = GetIconInfo(icon, &iconinfo); + if (!result) + qWarning("QPixmap::fromWinHICON(), failed to GetIconInfo()"); + + int w = 0; + int h = 0; + if (!iconinfo.xHotspot || !iconinfo.yHotspot) { + // We could not retrieve the icon size via GetIconInfo, + // so we try again using the icon bitmap. + BITMAP bm; + int result = GetObject(iconinfo.hbmColor, sizeof(BITMAP), &bm); + if (!result) result = GetObject(iconinfo.hbmMask, sizeof(BITMAP), &bm); + if (!result) { + qWarning("QPixmap::fromWinHICON(), failed to retrieve icon size"); + return QPixmap(); + } + w = bm.bmWidth; + h = bm.bmHeight; + } else { + // x and y Hotspot describes the icon center + w = iconinfo.xHotspot * 2; + h = iconinfo.yHotspot * 2; + } + const DWORD dwImageSize = w * h * 4; + + BITMAPINFO bmi; + memset(&bmi, 0, sizeof(bmi)); + bmi.bmiHeader.biSize = sizeof(BITMAPINFO); + bmi.bmiHeader.biWidth = w; + bmi.bmiHeader.biHeight = -h; + bmi.bmiHeader.biPlanes = 1; + bmi.bmiHeader.biBitCount = 32; + bmi.bmiHeader.biCompression = BI_RGB; + bmi.bmiHeader.biSizeImage = dwImageSize; + + uchar* bits; + + HBITMAP winBitmap = CreateDIBSection(hdc, &bmi, DIB_RGB_COLORS, (void**) &bits, 0, 0); + if (winBitmap ) + memset(bits, 0xff, dwImageSize); + if (!winBitmap) { + qWarning("QPixmap::fromWinHICON(), failed to CreateDIBSection()"); + return QPixmap(); + } + + HGDIOBJ oldhdc = (HBITMAP)SelectObject(hdc, winBitmap); + if (!DrawIconEx( hdc, 0, 0, icon, w, h, 0, 0, DI_NORMAL)) + qWarning("QPixmap::fromWinHICON(), failed to DrawIcon()"); + + uint mask = 0xff000000; + // Create image and copy data into image. + QImage image(w, h, QImage::Format_ARGB32); + + if (!image.isNull()) { // failed to alloc? + int bytes_per_line = w * sizeof(QRgb); + for (int y=0; y < h; ++y) { + QRgb *dest = (QRgb *) image.scanLine(y); + const QRgb *src = (const QRgb *) (bits + y * bytes_per_line); + for (int x=0; x < w; ++x) { + dest[x] = src[x]; + } + } + } + if (!DrawIconEx( hdc, 0, 0, icon, w, h, 0, 0, DI_MASK)) + qWarning("QPixmap::fromWinHICON(), failed to DrawIcon()"); + if (!image.isNull()) { // failed to alloc? + int bytes_per_line = w * sizeof(QRgb); + for (int y=0; y < h; ++y) { + QRgb *dest = (QRgb *) image.scanLine(y); + const QRgb *src = (const QRgb *) (bits + y * bytes_per_line); + for (int x=0; x < w; ++x) { + if (!src[x]) + dest[x] = dest[x] | mask; + } + } + } + SelectObject(hdc, oldhdc); //restore state + DeleteObject(winBitmap); + DeleteDC(hdc); + return QPixmap::fromImage(image); +} +#endif //ifndef Q_WS_WINCE +#endif //ifdef Q_WS_WIN + +QT_END_NAMESPACE |