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Diffstat (limited to 'examples/qws/svgalib/svgalibscreen.cpp')
| -rw-r--r-- | examples/qws/svgalib/svgalibscreen.cpp | 353 |
1 files changed, 0 insertions, 353 deletions
diff --git a/examples/qws/svgalib/svgalibscreen.cpp b/examples/qws/svgalib/svgalibscreen.cpp deleted file mode 100644 index 689568d045..0000000000 --- a/examples/qws/svgalib/svgalibscreen.cpp +++ /dev/null @@ -1,353 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies). -** Contact: http://www.qt-project.org/ -** -** This file is part of the examples of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:BSD$ -** You may use this file under the terms of the BSD license as follows: -** -** "Redistribution and use in source and binary forms, with or without -** modification, are permitted provided that the following conditions are -** met: -** * Redistributions of source code must retain the above copyright -** notice, this list of conditions and the following disclaimer. -** * 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. -** * Neither the name of Nokia Corporation and its Subsidiary(-ies) 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 THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT -** OWNER OR 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." -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#include "svgalibscreen.h" -#include "svgalibsurface.h" - -#include <QVector> -#include <QApplication> -#include <QColor> -#include <QWidget> - -#include <math.h> - -static int getModeDepth(vga_modeinfo *mode) -{ - const int bits = int(log2(mode->colors)); - if (bits == 24 && mode->bytesperpixel == 4) - return 32; - return bits; -} - -//! [0] -bool SvgalibScreen::connect(const QString &displaySpec) -{ - int mode = vga_getdefaultmode(); - if (mode <= 0) { - qCritical("SvgalibScreen::connect(): invalid vga mode"); - return false; - } - - vga_modeinfo *modeinfo = vga_getmodeinfo(mode); - - QScreen::lstep = modeinfo->linewidth; - QScreen::dw = QScreen::w = modeinfo->width; - QScreen::dh = QScreen::h = modeinfo->height; - QScreen::d = getModeDepth(modeinfo); - QScreen::size = QScreen::lstep * dh; - QScreen::data = 0; - - switch (depth()) { - case 32: - setPixelFormat(QImage::Format_ARGB32_Premultiplied); - break; - case 24: - setPixelFormat(QImage::Format_RGB888); - break; - case 16: - setPixelFormat(QImage::Format_RGB16); - break; - case 15: - setPixelFormat(QImage::Format_RGB555); - break; - default: - break; - } - - const int dpi = 72; - QScreen::physWidth = qRound(QScreen::dw * 25.4 / dpi); - QScreen::physHeight = qRound(QScreen::dh * 25.4 / dpi); - - const QStringList args = displaySpec.split(QLatin1Char(':'), - QString::SkipEmptyParts); - grayscale = args.contains(QLatin1String("grayscale"), Qt::CaseInsensitive); - - return true; -} -//! [0] - -void SvgalibScreen::initColorMap() -{ - const int numColors = vga_getcolors(); - if (numColors == 2 || numColors > 256) { - screencols = 0; - return; // not a palette based mode - } - - if (numColors == 16) { - if (grayscale) { - for (int i = 0; i < 256; ++i) { - const int c = i * 16 / 256; - vga_setpalette(i, c, c, c); - } - screencols = 256; // XXX: takes advantage of optimization in alloc() - } else { // read in EGA palette - int r, g, b; - for (int i = 0; i < 16; ++i) { - vga_getpalette(i, &r, &g, &b); - screenclut[i] = qRgb(r, g, b); - } - screencols = 16; - } - - return; - } - - Q_ASSERT(numColors == 256); - - if (grayscale) { - for (int i = 0; i < 256; ++i) { - const int c = i * 64 / 256; - vga_setpalette(i, c, c, c); - } - } else { - int i = 0; - -#if 0 - // read in EGA palette - while (i < 16) { - int r, g, b; - vga_getpalette(i, &r, &g, &b); - screenclut[i] = qRgb(r, g, b); - ++i; - } - screencols = 16; -#endif - - // 6 * 6 * 6 color cube - for (int r = 0; r < 6; ++r) { - for (int g = 0; g < 6; ++g) { - for (int b = 0; b < 6; ++b) { - vga_setpalette(i, r * 64/6, g * 64/6, b * 64/6); - screenclut[i] = qRgb(r * 256/6, g * 256/6, b * 256/6); - ++i; - } - } - } - screencols = i; - - while (i < 256) { - screenclut[i] = qRgb(0, 0, 0); - ++i; - } - } -} - -//! [1] -bool SvgalibScreen::initDevice() -{ - if (vga_init() != 0) { - qCritical("SvgalibScreen::initDevice(): unable to initialize svgalib"); - return false; - } - - int mode = vga_getdefaultmode(); - if (vga_setmode(mode) == -1) { - qCritical("SvgalibScreen::initialize(): unable to set graphics mode"); - return false; - } - - if (gl_setcontextvga(mode) != 0) { - qCritical("SvgalibScreen::initDevice(): unable to set vga context"); - return false; - } - context = gl_allocatecontext(); - gl_getcontext(context); - - vga_modeinfo *modeinfo = vga_getmodeinfo(mode); - if (modeinfo->flags & IS_LINEAR) - QScreen::data = vga_getgraphmem(); - - initColorMap(); - - QScreenCursor::initSoftwareCursor(); - return true; -} -//! [1] - -//! [2] -void SvgalibScreen::shutdownDevice() -{ - gl_freecontext(context); - vga_setmode(TEXT); -} -//! [2] - -//! [3] -void SvgalibScreen::disconnect() -{ -} -//! [3] - -//! [4] -void SvgalibScreen::solidFill(const QColor &color, const QRegion ®) -{ - int c; - if (depth() == 4 || depth() == 8) - c = alloc(color.red(), color.green(), color.blue()); - else - c = gl_rgbcolor(color.red(), color.green(), color.blue()); - - const QVector<QRect> rects = (reg & region()).rects(); - for (int i = 0; i < rects.size(); ++i) { - const QRect r = rects.at(i); - gl_fillbox(r.left(), r.top(), r.width(), r.height(), c); - } -} -//! [4] - -void SvgalibScreen::blit16To8(const QImage &image, - const QPoint &topLeft, const QRegion ®ion) -{ - const int imageStride = image.bytesPerLine() / 2; - const QVector<QRect> rects = region.rects(); - - for (int i = 0; i < rects.size(); ++i) { - const QRect r = rects.at(i).translated(-topLeft); - int y = r.y(); - const quint16 *s = reinterpret_cast<const quint16*>(image.scanLine(y)); - - while (y <= r.bottom()) { - int x1 = r.x(); - while (x1 <= r.right()) { - const quint16 c = s[x1]; - int x2 = x1; - // find span length - while ((x2+1 < r.right()) && (s[x2+1] == c)) - ++x2; - gl_hline(x1 + topLeft.x(), y + topLeft.y(), x2 + topLeft.x(), - qt_colorConvert<quint8, quint16>(c, 0)); - x1 = x2 + 1; - } - s += imageStride; - ++y; - } - } -} - -void SvgalibScreen::blit32To8(const QImage &image, - const QPoint &topLeft, const QRegion ®ion) -{ - const int imageStride = image.bytesPerLine() / 4; - const QVector<QRect> rects = region.rects(); - - for (int i = 0; i < rects.size(); ++i) { - const QRect r = rects.at(i).translated(-topLeft); - int y = r.y(); - const quint32 *s = reinterpret_cast<const quint32*>(image.scanLine(y)); - - while (y <= r.bottom()) { - int x1 = r.x(); - while (x1 <= r.right()) { - const quint32 c = s[x1]; - int x2 = x1; - // find span length - while ((x2+1 < r.right()) && (s[x2+1] == c)) - ++x2; - gl_hline(x1 + topLeft.x(), y + topLeft.y(), x2 + topLeft.x(), - qt_colorConvert<quint8, quint32>(c, 0)); - x1 = x2 + 1; - } - s += imageStride; - ++y; - } - } -} - -//! [5] -void SvgalibScreen::blit(const QImage &img, const QPoint &topLeft, - const QRegion ®) -{ - if (depth() == 8) { - switch (img.format()) { - case QImage::Format_RGB16: - blit16To8(img, topLeft, reg); - return; - case QImage::Format_RGB32: - case QImage::Format_ARGB32: - case QImage::Format_ARGB32_Premultiplied: - blit32To8(img, topLeft, reg); - return; - default: - break; - } - } - - if (img.format() != pixelFormat()) { - if (base()) - QScreen::blit(img, topLeft, reg); - return; - } - - const QVector<QRect> rects = (reg & region()).rects(); - - for (int i = 0; i < rects.size(); ++i) { - const QRect r = rects.at(i); - gl_putboxpart(r.x(), r.y(), r.width(), r.height(), - img.width(), img.height(), - static_cast<void*>(const_cast<uchar*>(img.bits())), - r.x() - topLeft.x(), r.y() - topLeft.y()); - } -} -//! [5] - -//! [7] -QWSWindowSurface* SvgalibScreen::createSurface(QWidget *widget) const -{ - if (base()) { - static int onScreenPaint = -1; - if (onScreenPaint == -1) - onScreenPaint = qgetenv("QT_ONSCREEN_PAINT").toInt(); - - if (onScreenPaint > 0 || widget->testAttribute(Qt::WA_PaintOnScreen)) - return new SvgalibSurface(widget); - } - return QScreen::createSurface(widget); -} -//! [7] - -//! [8] -QWSWindowSurface* SvgalibScreen::createSurface(const QString &key) const -{ - if (key == QLatin1String("svgalib")) - return new SvgalibSurface; - return QScreen::createSurface(key); -} -//! [8] |