daniel/QTeletextMaker
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Implement exporting subpage image to clipboard

Browse Source
This commit is contained in:
Gavin MacGregor
2025-07-13 19:20:44 +01:00
parent dad86a80f4
commit d8e0a2f3e2
2 changed files with 83 additions and 59 deletions
Download Patch File Download Diff File Expand all files Collapse all files

135
src/qteletextmaker/mainwindow.cpp
View File

@@ -19,6 +19,7 @@
#include <QActionGroup>
#include <QApplication>
#include <QClipboard>
#include <QDesktopServices>
#include <QFileDialog>
#include <QFileSystemWatcher>
@@ -184,6 +185,64 @@ void MainWindow::reload()
m_textWidget->document()->selectSubPageIndex(subPageIndex, true);
}
void MainWindow::extractImages(QImage sceneImage[], bool smooth, bool flashExtract)
{
// Prepare widget image for extraction
m_textScene->hideGUIElements(true);
// Disable exporting in Mix mode as it corrupts the background
bool reMix = m_textWidget->pageRender()->renderMode() == TeletextPageRender::RenderMix;
if (reMix)
m_textScene->setRenderMode(TeletextPageRender::RenderNormal);
const int flashTiming = flashExtract ? m_textWidget->flashTiming() : 0;
// Allocate initial image, with additional images for flashing if necessary
QImage interImage[6];
interImage[0] = QImage(m_textScene->sceneRect().size().toSize(), QImage::Format_RGB32);
if (flashTiming != 0) {
interImage[3] = QImage(m_textScene->sceneRect().size().toSize(), QImage::Format_RGB32);
if (flashTiming == 2) {
interImage[1] = QImage(m_textScene->sceneRect().size().toSize(), QImage::Format_RGB32);
interImage[2] = QImage(m_textScene->sceneRect().size().toSize(), QImage::Format_RGB32);
interImage[4] = QImage(m_textScene->sceneRect().size().toSize(), QImage::Format_RGB32);
interImage[5] = QImage(m_textScene->sceneRect().size().toSize(), QImage::Format_RGB32);
}
}
// Now extract the image(s) from the scene
for (int p=0; p<6; p++)
if (!interImage[p].isNull()) {
m_textWidget->pauseFlash(p);
// This ought to make the background transparent in Mix mode, but it doesn't
// if (m_textWidget->pageDecode()->mix())
// interImage.fill(QColor(0, 0, 0, 0));
QPainter interPainter(&interImage[p]);
m_textScene->render(&interPainter);
}
// Now we've extracted the image we can put the GUI things back
m_textScene->hideGUIElements(false);
if (reMix)
m_textScene->setRenderMode(TeletextPageRender::RenderMix);
m_textWidget->resumeFlash();
// Now scale the extracted image(s) to the selected aspect ratio
for (int p=0; p<6; p++)
if (!interImage[p].isNull()) {
if (m_viewAspectRatio == 3)
// Aspect ratio is Pixel 1:2 so we only need to double the vertical height
sceneImage[p] = interImage[p].scaled(interImage[p].width(), interImage[p].height()*2, Qt::IgnoreAspectRatio, Qt::FastTransformation);
else {
// Scale the image in two steps so that smoothing only occurs on vertical lines
// Double the vertical height first
const QImage doubleHeightImage = interImage[p].scaled(interImage[p].width(), interImage[p].height()*2, Qt::IgnoreAspectRatio, Qt::FastTransformation);
// then scale it horizontally to the selected aspect ratio
sceneImage[p] = doubleHeightImage.scaled((int)((float)doubleHeightImage.width() * aspectRatioHorizontalScaling[m_viewAspectRatio] * 2), doubleHeightImage.height(), Qt::IgnoreAspectRatio, (smooth) ? Qt::SmoothTransformation : Qt::FastTransformation);
}
}
}
void MainWindow::exportImage()
{
QString exportFileName, selectedFilter, gifFilter;
@@ -222,64 +281,8 @@ void MainWindow::exportImage()
return;
}
// Disable flash exporting if extension is not GIF
const int flashTiming = suffix == "gif" ? m_textWidget->flashTiming() : 0;
// Prepare widget image for extraction
m_textScene->hideGUIElements(true);
// Disable exporting in Mix mode as it corrupts the background
bool reMix = m_textWidget->pageRender()->renderMode() == TeletextPageRender::RenderMix;
if (reMix)
m_textScene->setRenderMode(TeletextPageRender::RenderNormal);
// Allocate initial image, with additional images for flashing if necessary
QImage interImage[6];
interImage[0] = QImage(m_textScene->sceneRect().size().toSize(), QImage::Format_RGB32);
if (flashTiming != 0) {
interImage[3] = QImage(m_textScene->sceneRect().size().toSize(), QImage::Format_RGB32);
if (flashTiming == 2) {
interImage[1] = QImage(m_textScene->sceneRect().size().toSize(), QImage::Format_RGB32);
interImage[2] = QImage(m_textScene->sceneRect().size().toSize(), QImage::Format_RGB32);
interImage[4] = QImage(m_textScene->sceneRect().size().toSize(), QImage::Format_RGB32);
interImage[5] = QImage(m_textScene->sceneRect().size().toSize(), QImage::Format_RGB32);
}
}
// Now extract the image(s) from the scene
for (int p=0; p<6; p++)
if (!interImage[p].isNull()) {
m_textWidget->pauseFlash(p);
// This ought to make the background transparent in Mix mode, but it doesn't
// if (m_textWidget->pageDecode()->mix())
// interImage.fill(QColor(0, 0, 0, 0));
QPainter interPainter(&interImage[p]);
m_textScene->render(&interPainter);
}
// Now we've extracted the image we can put the GUI things back
m_textScene->hideGUIElements(false);
if (reMix)
m_textScene->setRenderMode(TeletextPageRender::RenderMix);
m_textWidget->resumeFlash();
// Now scale the extracted image(s) to the selected aspect ratio
QImage scaledImage[6];
for (int p=0; p<6; p++)
if (!interImage[p].isNull()) {
if (m_viewAspectRatio == 3)
// Aspect ratio is Pixel 1:2 so we only need to double the vertical height
scaledImage[p] = interImage[p].scaled(interImage[p].width(), interImage[p].height()*2, Qt::IgnoreAspectRatio, Qt::FastTransformation);
else {
// Scale the image in two steps so that smoothing only occurs on vertical lines
// Double the vertical height first
const QImage doubleHeightImage = interImage[p].scaled(interImage[p].width(), interImage[p].height()*2, Qt::IgnoreAspectRatio, Qt::FastTransformation);
// then scale it horizontally to the selected aspect ratio
// Don't smooth GIF as it's bound to break the 256 colour limit
scaledImage[p] = doubleHeightImage.scaled((int)((float)doubleHeightImage.width() * aspectRatioHorizontalScaling[m_viewAspectRatio] * 2), doubleHeightImage.height(), Qt::IgnoreAspectRatio, (suffix == "gif") ? Qt::FastTransformation : Qt::SmoothTransformation);
}
}
extractImages(scaledImage, suffix != "gif", suffix == "gif");
if (suffix == "png") {
if (scaledImage[0].save(exportFileName, "PNG"))
@@ -294,7 +297,7 @@ void MainWindow::exportImage()
if (scaledImage[3].isNull())
// No flashing
gif.addFrame(scaledImage[0], 0);
else if (interImage[1].isNull()) {
else if (scaledImage[1].isNull()) {
// 1Hz flashing
gif.addFrame(scaledImage[0], 500);
gif.addFrame(scaledImage[3], 500);
@@ -310,6 +313,17 @@ void MainWindow::exportImage()
}
}
#ifndef QT_NO_CLIPBOARD
void MainWindow::imageToClipboard()
{
QImage scaledImage[1];
QClipboard *clipboard = QApplication::clipboard();
extractImages(scaledImage, true);
clipboard->setImage(scaledImage[0]);
}
#endif // !QT_NO_CLIPBOARD
void MainWindow::exportZXNet()
{
QDesktopServices::openUrl(QUrl("http://zxnet.co.uk/teletext/editor/" + exportHashStringPage(m_textWidget->document()->currentSubPage()) + exportHashStringPackets(m_textWidget->document()->currentSubPage())));
@@ -545,6 +559,11 @@ void MainWindow::createActions()
editMenu->addAction(pasteAct);
editToolBar->addAction(pasteAct);
QAction *copyImageAct = editMenu->addAction(tr("Copy as image"));
copyImageAct->setShortcut(QKeySequence(Qt::CTRL | Qt::SHIFT | Qt::Key_C));
copyImageAct->setStatusTip(tr("Copy this subpage as an image to the clipboard"));
connect(copyImageAct, &QAction::triggered, this, &MainWindow::imageToClipboard);
editMenu->addSeparator();
#endif // !QT_NO_CLIPBOARD

7
src/qteletextmaker/mainwindow.h
View File

@@ -25,9 +25,10 @@
#include <QGraphicsProxyWidget>
#include <QGraphicsScene>
#include <QGraphicsView>
#include <QMainWindow>
#include <QImage>
#include <QLabel>
#include <QList>
#include <QMainWindow>
#include <QPushButton>
#include <QSlider>
#include <QToolButton>
@@ -78,6 +79,9 @@ private slots:
void updatePageWidgets();
void updateCursorPosition();
#ifndef QT_NO_CLIPBOARD
void imageToClipboard();
#endif // !QT_NO_CLIPBOARD
void insertRow(bool copyRow);
void deleteRow();
void insertSubPage(bool afterCurrentSubPage, bool copyCurrentSubPage);
@@ -112,6 +116,7 @@ private:
bool maybeSave();
void openFile(const QString &fileName);
void loadFile(const QString &fileName);
void extractImages(QImage sceneImage[], bool smooth = false, bool flashExtract = false);
static bool hasRecentFiles();
void prependToRecentFiles(const QString &fileName);
void setRecentFilesVisible(bool visible);