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#ifndef __SCALING_H__
#define __SCALING_H__
#include <stdlib.h>
#include <math.h>
static int QT3SCALE_MAX = 3 ;
static int QT3SCALE = 1 ;
#define QT3SCALE_TAG_BUFFSIZE 3
static char QT3SCALE_TAG[QT3SCALE_TAG_BUFFSIZE] = { '1', 0, 0 } ;
//--- Information about current application font
const static TQFont CurrentFont = TQApplication::font() ;
const static TQFontInfo CurrentFontInfo(CurrentFont) ;
const static TQFontMetrics CurrentFontMetrics(CurrentFont) ;
static int FONT_Size = 16 ; // Sans 12 pixel size
static double FONT_Scale = 1.00 ; // 96 DPI
//------------------------------------------------------------------------------
// Functions called during style initialization
//------------------------------------------------------------------------------
static void
Generate_Scaling_Metrics(const QWidget * w = 0)
{
//--- FONT_Size is an important metric for scaling widget elements
FONT_Size = CurrentFontMetrics.ascent() + CurrentFontMetrics.descent() ;
/* Alternative methods for initial computing FONT_Size
with exmplary values displayed for Sans 10/12 fonts:
CurrentFontMetrics.strikeOutPos() * 3 ; // 12/15
CurrentFontInfo.pixelSize() ; // 13/16
CurrentFontMetrics.overlinePos() ; // 13/16
CurrentFontMetrics.ascent() + CurrentFontMetrics.descent() ; // 14/18
CurrentFontMetrics.height() ; // 15/19
*/
if (FONT_Size % 2 != 0) FONT_Size++ ;
//--- FONT_scale is also an important metric for scaling widget elements
double Pixels_96dpi = 4 * CurrentFontInfo.pointSize() / 3 ;
// Calculate font size relative to 96dpi
FONT_Scale = (double)(int)((double)( FONT_Size / Pixels_96dpi )*4)/4 ;
// Calculate font scaling relative to 96dpi in increments of 0.25
//fprintf(stderr,
// "At the current %.2f scaling, a %d-point font is %d (%d) pixels high\n",
// FONT_scale, FONT_points, FONT_size, FONT_height
//) ;
}
//------------------------------------------------------------------------------
void Set_QT3SCALE()
{
QT3SCALE = 1 ;
const char *QT3SCALE_env = getenv("QT3SCALE");
if ( QT3SCALE_env != NULL ) {
int QT3SCALE_int = atoi(QT3SCALE_env) ;
if ( QT3SCALE_int > 1 && QT3SCALE_int <= QT3SCALE_MAX )
QT3SCALE = QT3SCALE_int ;
}
snprintf(QT3SCALE_TAG, QT3SCALE_TAG_BUFFSIZE, "%d", QT3SCALE) ;
}
//------------------------------------------------------------------------------
/*
QStyle::PE_ButtonCommand - button used to initiate an action, for example, a QPushButton.
QStyle::PE_ButtonDefault - this button is the default button, e.g. in a dialog.
QStyle::PE_ButtonBevel - generic button bevel.
QStyle::PE_ButtonTool - tool button, for example, a QToolButton.
QStyle::PE_ButtonDropDown - drop down button, for example, a tool button that displays a popup menu, for example, QPopupMenu.
QStyle::PE_FocusRect - generic focus indicator.
QStyle::PE_ArrowUp - up arrow.
QStyle::PE_ArrowDown - down arrow.
QStyle::PE_ArrowRight - right arrow.
QStyle::PE_ArrowLeft - left arrow.
QStyle::PE_SpinWidgetUp - up symbol for a spin widget, for example a QSpinBox.
QStyle::PE_SpinWidgetDown - down symbol for a spin widget.
QStyle::PE_SpinWidgetPlus - increase symbol for a spin widget.
QStyle::PE_SpinWidgetMinus - decrease symbol for a spin widget.
QStyle::PE_Indicator - on/off indicator, for example, a QCheckBox.
QStyle::PE_IndicatorMask - bitmap mask for an indicator.
QStyle::PE_ExclusiveIndicator - exclusive on/off indicator, for example, a QRadioButton.
QStyle::PE_ExclusiveIndicatorMask - bitmap mask for an exclusive indicator.
QStyle::PE_DockWindowHandle - tear off handle for dock windows and toolbars, for example QDockWindows and QToolBars.
QStyle::PE_DockWindowSeparator - item separator for dock window and toolbar contents.
QStyle::PE_DockWindowResizeHandle - resize handle for dock windows.
QStyle::PE_Splitter - splitter handle; see also QSplitter.
QStyle::PE_Panel - generic panel frame; see also QFrame.
QStyle::PE_PanelPopup - panel frame for popup windows/menus; see also QPopupMenu.
QStyle::PE_PanelMenuBar - panel frame for menu bars.
QStyle::PE_PanelDockWindow - panel frame for dock windows and toolbars.
QStyle::PE_PanelTabWidget - panel frame for tab widgets.
QStyle::PE_PanelLineEdit - panel frame for line edits.
QStyle::PE_PanelGroupBox - panel frame for group boxes.
QStyle::PE_TabBarBase - area below tabs in a tab widget, for example, QTab.
QStyle::PE_HeaderSection - section of a list or table header; see also QHeader.
QStyle::PE_HeaderArrow - arrow used to indicate sorting on a list or table header
QStyle::PE_StatusBarSection - section of a status bar; see also QStatusBar.
QStyle::PE_GroupBoxFrame - frame around a group box; see also QGroupBox.
QStyle::PE_WindowFrame - frame around a MDI window or a docking window
QStyle::PE_Separator - generic separator.
QStyle::PE_SizeGrip - window resize handle; see also QSizeGrip.
QStyle::PE_CheckMark - generic check mark; see also QCheckBox.
QStyle::PE_ScrollBarAddLine - scrollbar line increase indicator (i.e. scroll down); see also QScrollBar.
QStyle::PE_ScrollBarSubLine - scrollbar line decrease indicator (i.e. scroll up).
QStyle::PE_ScrollBarAddPage - scolllbar page increase indicator (i.e. page down).
QStyle::PE_ScrollBarSubPage - scrollbar page decrease indicator (i.e. page up).
QStyle::PE_ScrollBarSlider - scrollbar slider
QStyle::PE_ScrollBarFirst - scrollbar first line indicator (i.e. home).
QStyle::PE_ScrollBarLast - scrollbar last line indicator (i.e. end).
QStyle::PE_ProgressBarChunk - section of a progress bar indicator; see also QProgressBar.
QStyle::PE_CheckListController - controller part of a listview item
QStyle::PE_CheckListIndicator - checkbox part of a listview item
QStyle::PE_CheckListExclusiveIndicator - radiobutton part of a listview item
QStyle::PE_RubberBand - rubber band used in such things as iconview
QStyle::PE_CustomBase - base value for custom PrimitiveElements. All values above this are reserved for custom use. Custom values must be greater than this value.
*/
#endif
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