70 lines
2 KiB
C++
70 lines
2 KiB
C++
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#ifndef PICK_RGB_UTILS_H
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#define PICK_RGB_UTILS_H
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#include "tcommon.h"
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#include <QRect>
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#include <QRgb>
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#undef DVAPI
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#undef DVVAR
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#ifdef TOONZQT_EXPORTS
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#define DVAPI DV_EXPORT_API
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#define DVVAR DV_EXPORT_VAR
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#else
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#define DVAPI DV_IMPORT_API
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#define DVVAR DV_IMPORT_VAR
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#endif
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//-------------------------------------------------------------------------------
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// Forward declarations
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class QWidget;
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class QGLWidget;
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//-------------------------------------------------------------------------------
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//! Returns the average color displayed in a widget across the specified rect.
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/*! This function reads the widget's frame buffer content on given rect, and returns
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a mean of its pixels. The widget's background color is assumed outside the
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widget bounds.
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\warning Use this function only on plain widgets - in case your widget inherits
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QGLWidget, invoke the overloaded function accepting a QGLWidget* type
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instead.
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*/
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QRgb DVAPI pickRGB(QWidget *widget, const QRect &rect);
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inline QRgb pickRGB(QWidget *widget, const QPoint &pos)
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{
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return pickRGB(widget, QRect(pos.x(), pos.y(), 1, 1));
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}
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//! Returns the average color displayed in a QGLWidget instance across the specified rect.
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/*! This function reads the widget's front frame buffer on given rect, and returns
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a mean of its pixels.
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\warning Pixel colors are undefined outside the widget's geometry.
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*/
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QRgb DVAPI pickRGB(QGLWidget *widget, const QRect &rect);
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inline QRgb pickRGB(QGLWidget *widget, const QPoint &pos)
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{
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return pickRGB(widget, QRect(pos.x(), pos.y(), 1, 1));
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}
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//! Returns the average color displayed on screen across the specified rect.
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/*! This function reads the screen's buffer on given rect, and returns
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a mean of its pixels.
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\warning In general, grabbing an area outside the screen is not safe.
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This depends on the underlying window system.
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*/
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QRgb DVAPI pickScreenRGB(const QRect &rect);
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inline QRgb pickScreenRGB(const QPoint &pos)
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{
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return pickScreenRGB(QRect(pos.x(), pos.y(), 1, 1));
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}
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#endif //PICK_RGB_UTILS_H
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