Increase size of internal shared double buffer to accommodate larger screens more typical of modern (year 2011) systems

pull/1/head
Timothy Pearson 13 years ago
parent 88b0885ab8
commit a4652cb953

@ -44,6 +44,11 @@
#include "tqpainter.h"
#include "tqcleanuphandler.h"
// Modern systems (year 2011) have very large screens in excess of 1000 pixels wide
// Some may even have screens in excess of 4000 pixels wide(!)
// Prevent drawing artifacts on such screens
#define USE_HUGE_QT_SHARED_DOUBLE_BUFFERS 1
static TQPixmap* qdb_shared_pixmap = 0;
static TQPixmap *qdb_force_pixmap = 0;
static TQSharedDoubleBuffer* qdb_owner = 0;
@ -74,9 +79,15 @@ static const int hardLimitHeight = -1;
// static const int sharedLimitWidth = 64;
// static const int sharedLimitHeight = 20;
// #else
#ifdef USE_HUGE_QT_SHARED_DOUBLE_BUFFERS
// 24M on 32bpp
static const int sharedLimitWidth = 6400;
static const int sharedLimitHeight = 1000;
#else
// 240K on 32bpp
static const int sharedLimitWidth = 640;
static const int sharedLimitHeight = 100;
#endif
// #endif
// *******************************************************************
@ -533,8 +544,13 @@ TQPixmap *TQSharedDoubleBuffer::getPixmap()
rw = 4000; // 32MB seems reasonable enough, but the usage is likely to be wider than it is tall (think of multiple wide monitors)
rh = 2000;
#else // USE_QT4
#ifdef USE_HUGE_QT_SHARED_DOUBLE_BUFFERS
rw = TQMIN(rw, 16000);
rh = TQMIN(rh, 16000);
#else
rw = TQMIN(rw, 8000);
rh = TQMIN(rh, 8000);
#endif
#endif // USE_QT4
// need to create a big pixmap and start the cleaner
if ( ! qdb_force_pixmap ) {

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