85 lines
2.5 KiB
C++
85 lines
2.5 KiB
C++
// -*- mode: C++; indent-tabs-mode: nil; c-basic-offset: 2; -*-
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#ifndef __rendercontrol_hh
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#define __rendercontrol_hh
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extern "C" {
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#include <X11/Xlib.h>
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#include <X11/Xutil.h>
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}
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#include "surface.hh"
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namespace otk {
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class ScreenInfo;
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class RenderTexture;
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class Font;
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class RenderColor;
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class ustring;
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class PixmapMask;
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class RenderControl {
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protected:
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int _screen;
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// bool _dither;
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RenderControl(int screen);
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inline void highlight(pixel32 *x, pixel32 *y, bool raised) const;
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void verticalGradient(Surface &sf, const RenderTexture &texture) const;
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void horizontalGradient(Surface &sf, const RenderTexture &texture) const;
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void diagonalGradient(Surface &sf, const RenderTexture &texture) const;
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void crossDiagonalGradient(Surface &sf, const RenderTexture &texture) const;
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virtual void drawGradientBackground(Surface &sf,
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const RenderTexture &texture) const;
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virtual void drawSolidBackground(Surface& sf,
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const RenderTexture& texture) const;
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//! Reduces a Surface's Surface::pixelData so that it will display correctly
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//! on the screen's depth
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/*!
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This function allocates and sets the im->data member. The allocated memory
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will be freed when XDetroyImage is called on the XImage.
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*/
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virtual void reduceDepth(Surface &sf, XImage *im) const = 0;
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public:
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virtual ~RenderControl();
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static RenderControl *createRenderControl(int screen);
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//! Draws a background onto a Surface, as specified by a RenderTexture
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/*!
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This function will overwrite the entire surface.
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*/
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virtual void drawBackground(Surface &sf,
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const RenderTexture &texture) const;
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//! Draws an image onto the surface
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/*!
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This function will overwrite the entire surface.<br>
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The image must be specified in 32-bit packed ARGB format. The current
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background will be used for applying the alpha.
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*/
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virtual void drawImage(Surface &sf, int w, int h,
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unsigned long *data) const;
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//! Draws an image onto the surface
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virtual void drawImage(Surface &sf, Pixmap pixmap, Pixmap mask) const;
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//! Draws a string onto a Surface
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virtual void drawString(Surface &sf, const Font &font, int x, int y,
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const RenderColor &color,
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const ustring &string) const;
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//! Draws a PixmapMask with a specified color onto a Surface
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virtual void drawMask(Surface &sf, const RenderColor &color,
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const PixmapMask &mask) const;
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virtual void allocateColor(XColor *color) const = 0;
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};
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}
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#endif // __rendercontrol_hh
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