author | mickeyl <mickeyl> | 2004-05-13 21:56:23 (UTC) |
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committer | mickeyl <mickeyl> | 2004-05-13 21:56:23 (UTC) |
commit | f005863ac3e3106f3da9fd337ab0a20da0cd4b83 (patch) (side-by-side diff) | |
tree | b633e278659c87b7bc964bb5ea80d46131798960 /noncore/graphics/drawpad | |
parent | 6841da6429d864d5554c5a16e87c2755fe96343b (diff) | |
download | opie-f005863ac3e3106f3da9fd337ab0a20da0cd4b83.zip opie-f005863ac3e3106f3da9fd337ab0a20da0cd4b83.tar.gz opie-f005863ac3e3106f3da9fd337ab0a20da0cd4b83.tar.bz2 |
BUGFIX for 1314: Fix page initialization on first start of drawpad.
Problem was caused by a race condition. Developers: If you have todo
initializations which depend on the widget layout being finished,
_don't_ do this in the widget constructor but in a callback from the mainloop,
i.e. via QTimer::singleShot( 10, this, SLOT( myInitialization() ) );
-rw-r--r-- | noncore/graphics/drawpad/drawpad.cpp | 6 | ||||
-rw-r--r-- | noncore/graphics/drawpad/drawpad.h | 3 | ||||
-rw-r--r-- | noncore/graphics/drawpad/drawpadcanvas.cpp | 6 | ||||
-rw-r--r-- | noncore/graphics/drawpad/main.cpp | 1 |
4 files changed, 10 insertions, 6 deletions
diff --git a/noncore/graphics/drawpad/drawpad.cpp b/noncore/graphics/drawpad/drawpad.cpp index d9d0ce0..c0f42d9 100644 --- a/noncore/graphics/drawpad/drawpad.cpp +++ b/noncore/graphics/drawpad/drawpad.cpp @@ -46,13 +46,12 @@ #include <qspinbox.h> #include <qtoolbutton.h> #include <qtooltip.h> #include <qwhatsthis.h> using namespace Opie::Ui; -using namespace Opie::Ui; DrawPad::DrawPad(QWidget* parent, const char* name, WFlags /*fl*/ ) : QMainWindow(parent, name, WStyle_ContextHelp) { // init members connect( qApp, SIGNAL(appMessage(const QCString&, const QByteArray&)), this, SLOT(slotAppMessage(const QCString&, const QByteArray&)) ); @@ -278,13 +277,16 @@ DrawPad::DrawPad(QWidget* parent, const char* name, WFlags /*fl*/ ) QToolTip::add(m_pBrushColorToolButton, tr("Fill Color")); m_pBrushColorToolButton->setPopup(brushColorPopupMenu); m_pBrushColorToolButton->setPopupDelay(0); changeBrushColor(Qt::white); - finishStartup(); + // delay the rest of the initialization and do it from within the mainloop + // if we don't do this, the widget layout may not be constructed upon + // and we will end up with a wrong QScrollview page size (Mickeyl) + QTimer::singleShot( 100, this, SLOT( finishStartup() ) ); } void DrawPad::finishStartup() { // init pages diff --git a/noncore/graphics/drawpad/drawpad.h b/noncore/graphics/drawpad/drawpad.h index ba9e47d..63d3057 100644 --- a/noncore/graphics/drawpad/drawpad.h +++ b/noncore/graphics/drawpad/drawpad.h @@ -38,15 +38,16 @@ public: Tool* tool() { return m_pTool; } QPen pen() { return m_pen; } QBrush brush() { return m_brush; } bool antiAliasing(); - void finishStartup(); private slots: + void finishStartup(); + void newPage(); void clearPage(); void deletePage(); void slotAppMessage( const QCString&, const QByteArray& ); diff --git a/noncore/graphics/drawpad/drawpadcanvas.cpp b/noncore/graphics/drawpad/drawpadcanvas.cpp index 423ef26..5d0c6e4 100644 --- a/noncore/graphics/drawpad/drawpadcanvas.cpp +++ b/noncore/graphics/drawpad/drawpadcanvas.cpp @@ -513,17 +513,19 @@ void DrawPadCanvas::contentsMouseMoveEvent(QMouseEvent* e) { m_pDrawPad->tool()->mouseMoveEvent(e); } void DrawPadCanvas::drawContents(QPainter* p, int cx, int cy, int cw, int ch) { + Page* currentPage = m_pages.current(); + if ( !currentPage ) return; // no page yet --> initialization not finished (Mickeyl) QRect clipRect(cx, cy, cw, ch); - QRect pixmapRect(0, 0, m_pages.current()->pixmap()->width(), m_pages.current()->pixmap()->height()); + QRect pixmapRect(0, 0, currentPage->pixmap()->width(), m_pages.current()->pixmap()->height()); QRect drawRect = pixmapRect.intersect(clipRect); - p->drawPixmap(drawRect.topLeft(), *(m_pages.current()->pixmap()), drawRect); + p->drawPixmap(drawRect.topLeft(), *(currentPage->pixmap()), drawRect); if (drawRect.right() < clipRect.right()) { p->fillRect(drawRect.right() + 1, cy, cw - drawRect.width(), ch, colorGroup().dark()); } if (drawRect.bottom() < clipRect.bottom()) { diff --git a/noncore/graphics/drawpad/main.cpp b/noncore/graphics/drawpad/main.cpp index e48bb2e..f468022 100644 --- a/noncore/graphics/drawpad/main.cpp +++ b/noncore/graphics/drawpad/main.cpp @@ -13,8 +13,7 @@ #include "drawpad.h" #include <opie2/oapplicationfactory.h> using namespace Opie::Core; -using namespace Opie::Core; OPIE_EXPORT_APP( OApplicationFactory<DrawPad> ) |