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Painter drawing functions now return the BRect enclosing all pixels that have changed, use this for invalidating the correct area in the backbuffer

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git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@12407 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Stephan Aßmus
2005-04-15 09:55:15 +00:00
parent 94176e0118
commit 3d16cf4bce
3 changed files with 113 additions and 165 deletions
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headers/private/servers/app/Painter.h
+20 -36
View File
@@ -23,24 +23,10 @@ class ServerBitmap;
class ServerFont;
// TODO: API transition:
// * all functions should return BRect of pixels touched by an operation
// * most all functions should take a DrawData* context parameter instead
// of the current pattern argument, that way, each function can
// decide for itself, which pieces of information in DrawData it
// needs
// * there would be no "scale" and "origin" within Painter, all
// coordinates are expected in screen coordinates, all other data
// passed in the DrawData is assumed to be already properly
// converted (scaled and offset by origin, converted to screen),
// this is important for a views graphics state local clipping (as
// added by the user) and also font size and so on. For a correct
// handling of a views scale and origin, see the original Painter
// implementation at src/tests/servers/app/Painter
// * Painter should use a custom agg::renderer_mclip, which takes
// a BRegion pointer. The current conversion from BRegion to
// agg::renderer_mclip is quite expensive (arround 190 usecs on
// my machine, which is almost the time it takes for the actual
// drawing which comes after it...
// * Painter itself should be made thread safe. Because no
// ServerWindow is supposed to draw outside of its clipping region,
// there is actually no reason to lock the DisplayDriver. Multiple
@@ -108,32 +94,32 @@ class Painter {
const rgb_color& c) const;
// triangles
void StrokeTriangle( BPoint pt1,
BRect StrokeTriangle( BPoint pt1,
BPoint pt2,
BPoint pt3) const;
void FillTriangle( BPoint pt1,
BRect FillTriangle( BPoint pt1,
BPoint pt2,
BPoint pt3) const;
// polygons
void StrokePolygon( const BPoint* ptArray,
BRect StrokePolygon( const BPoint* ptArray,
int32 numPts,
bool closed = true) const;
void FillPolygon( const BPoint* ptArray,
BRect FillPolygon( const BPoint* ptArray,
int32 numPts,
bool closed = true) const;
// bezier curves
void StrokeBezier( const BPoint* controlPoints) const;
BRect StrokeBezier( const BPoint* controlPoints) const;
void FillBezier( const BPoint* controlPoints) const;
BRect FillBezier( const BPoint* controlPoints) const;
// shapes
void StrokeShape( /*const */BShape* shape) const;
BRect StrokeShape( /*const */BShape* shape) const;
void FillShape( /*const */BShape* shape) const;
BRect FillShape( /*const */BShape* shape) const;
// rects
@@ -150,31 +136,31 @@ class Painter {
const rgb_color& c) const;
// round rects
void StrokeRoundRect(const BRect& r,
BRect StrokeRoundRect(const BRect& r,
float xRadius,
float yRadius) const;
void FillRoundRect( const BRect& r,
BRect FillRoundRect( const BRect& r,
float xRadius,
float yRadius) const;
// ellipses
void StrokeEllipse( BPoint center,
BRect StrokeEllipse( BPoint center,
float xRadius,
float yRadius) const;
void FillEllipse( BPoint center,
BRect FillEllipse( BPoint center,
float xRadius,
float yRadius) const;
// arcs
void StrokeArc( BPoint center,
BRect StrokeArc( BPoint center,
float xRadius,
float yRadius,
float angle,
float span) const;
void FillArc( BPoint center,
BRect FillArc( BPoint center,
float xRadius,
float yRadius,
float angle,
@@ -212,9 +198,9 @@ class Painter {
BRect viewRect) const;
// some convenience stuff
void FillRegion( const BRegion* region) const;
BRect FillRegion( const BRegion* region) const;
void InvertRect( const BRect& r) const;
BRect InvertRect( const BRect& r) const;
BRect BoundingBox( const char* utf8String,
uint32 length,
@@ -232,23 +218,21 @@ class Painter {
bool centerOffset = true) const;
BRect _Clipped(const BRect& rect) const;
// void _RebuildClipping();
void _UpdateFont();
void _UpdateLineWidth();
// drawing functions stroke/fill
void _DrawTriangle( BPoint pt1,
BRect _DrawTriangle( BPoint pt1,
BPoint pt2,
BPoint pt3,
bool fill) const;
void _DrawEllipse( BPoint center,
BRect _DrawEllipse( BPoint center,
float xRadius,
float yRadius,
bool fill) const;
void _DrawShape( /*const */BShape* shape,
BRect _DrawShape( /*const */BShape* shape,
bool fill) const;
void _DrawPolygon( const BPoint* ptArray,
BRect _DrawPolygon( const BPoint* ptArray,
int32 numPts,
bool closed,
bool fill) const;