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Profile: add "synchronous" mode for picture plotting

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The thumbnails were fetched in the background to achieve a
snappier UI. The problem with that is that on LaTeX etc.
export only placeholder thumbnails were shown.

Therefore, implement a synchronous mode. This only tries
to fetch cached thumbnails or calculate thumbnails for
images. Videos and remote files are not supported.

Fixes #1963

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
This commit is contained in:
Berthold Stoeger 2019-02-02 21:23:52 +01:00 • committed by Robert C. Helling
parent 07b0df215f
commit 8a8063c1cd
6 changed files with 40 additions and 15 deletions
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5
profile-widget/profilewidget2.h
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@ -75,7 +75,7 @@ public:
ProfileWidget2(QWidget *parent = 0);
void resetZoom();
void scale(qreal sx, qreal sy);
void plotDive(const struct dive *d = 0, bool force = false, bool clearPictures = false);
void plotDive(const struct dive *d = 0, bool force = false, bool clearPictures = false, bool plotPicturesSynchronously = false);
void setupItem(AbstractProfilePolygonItem *item, DiveCartesianAxis *vAxis, int vData, int hData, int zValue);
void setPrintMode(bool mode, bool grayscale = false);
bool getPrintMode();
@ -173,6 +173,7 @@ private: /*methods*/
void createPPGas(PartialPressureGasItem *item, int verticalColumn, color_index_t color, color_index_t colorAlert,
const double *thresholdSettingsMin, const double *thresholdSettingsMax);
void clearPictures();
void plotPicturesInternal(bool synchronous);
private:
DivePlotDataModel *dataModel;
int zoomLevel;
@ -240,7 +241,7 @@ private:
std::unique_ptr<DivePictureItem> thumbnail;
// For videos with known duration, we represent the duration of the video by a line
std::unique_ptr<QGraphicsRectItem> durationLine;
PictureEntry (offset_t offsetIn, const QString &filenameIn, QGraphicsScene *scene);
PictureEntry (offset_t offsetIn, const QString &filenameIn, QGraphicsScene *scene, bool synchronous);
bool operator< (const PictureEntry &e) const;
};
void updateThumbnailXPos(PictureEntry &e);