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export: set maximum width / height according limitations in QPainter

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This commit is contained in:
plc-user 2025-02-07 11:34:05 +01:00
parent 924d1c1b05
commit bbbf77597a
2 changed files with 13 additions and 16 deletions
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15
sources/exportdialog.cpp
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@ -869,16 +869,13 @@ void ExportDialog::slot_changeFilesExtension(bool force_extension) {
QString format_acronym = epw -> exportProperties().format;
QString format_extension = "." + format_acronym.toLower();
// set maximum width / height according specifications of export-type
if (format_extension == ".bmp") {
// set maximum width / height according limitations in QPainter
if ((format_extension == ".bmp") ||
(format_extension == ".jpg") ||
(format_extension == ".png")) {
foreach (auto line, diagram_lines_.values() ) {
line->width ->setRange(1, BMPmaxSize);
line->height->setRange(1, BMPmaxSize);
}
} else if (format_extension == ".jpg") {
foreach (auto line, diagram_lines_.values() ) {
line->width ->setRange(1, JPGmaxSize);
line->height->setRange(1, JPGmaxSize);
line->width ->setRange(1, RasterMaxSize);
line->height->setRange(1, RasterMaxSize);
}
} else {
foreach (auto line, diagram_lines_.values() ) {

14
sources/exportdialog.h
View File

@ -59,7 +59,7 @@ class ExportDialog : public QDialog {
QPushButton *preview;
QPushButton *clipboard;
};
// attributes
private:
QHash<int, ExportDialog::ExportDiagramLine *> diagram_lines_;
@ -78,15 +78,15 @@ class ExportDialog : public QDialog {
QSignalMapper *ratio_mapper_;
QSignalMapper *reset_mapper_;
QSignalMapper *clipboard_mapper_;
// QPainter limits size of pixel-images to 2^15 - 1
// constants for exporting images:
static const int BMPmaxSize = 32767;
static const int JPGmaxSize = 65535;
static const int RasterMaxSize = 32767;
static const int GeneralMaxSize = 100000;
// project whose diagrams are to be exported
QETProject *project_;
// methods
QWidget *initDiagramsListPart();
void saveReloadDiagramParameters(Diagram *, bool = true);
@ -96,7 +96,7 @@ class ExportDialog : public QDialog {
void exportDiagram(ExportDiagramLine *);
qreal diagramRatio(Diagram *);
QSize diagramSize(Diagram *);
public slots:
void slot_correctWidth(int);
void slot_correctHeight(int);