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Diffstat (limited to 'styles/phase2/scaling.h')
| -rw-r--r-- | styles/phase2/scaling.h | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/styles/phase2/scaling.h b/styles/phase2/scaling.h new file mode 100644 index 00000000..bb478c0f --- /dev/null +++ b/styles/phase2/scaling.h @@ -0,0 +1,139 @@ +#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 |