More draw tests.
This commit is contained in:
Pietro Gagliardi
parent
87e51487f6
commit
46149edccf
351
test/drawtests.c
351
test/drawtests.c
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@ -953,6 +953,350 @@ static void drawCSArcNegative(uiAreaDrawParams *p)
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// TODO clip image
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// curve rectangle
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static void drawCSCurveRectangle(uiAreaDrawParams *p)
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{
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double x0 = 25.6, /* parameters like cairo_rectangle */
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y0 = 25.6,
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rect_width = 204.8,
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rect_height = 204.8,
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radius = 102.4; /* and an approximate curvature radius */
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double x1,y1;
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uiDrawBrush source;
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uiDrawStrokeParams sp;
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uiDrawPath *path;
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crsourcergba(&source, 0, 0, 0, 1);
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sp.Cap = uiDrawLineCapFlat;
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sp.Join = uiDrawLineJoinMiter;
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sp.MiterLimit = uiDrawDefaultMiterLimit;
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path = uiDrawNewPath(uiDrawFillModeWinding);
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x1=x0+rect_width;
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y1=y0+rect_height;
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if (!rect_width || !rect_height)
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return;
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if (rect_width/2 < radius) {
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if (rect_height/2<radius) {
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uiDrawPathNewFigure(path, x0, (y0 + y1)/2);
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uiDrawPathBezierTo(path, x0 ,y0, x0, y0, (x0 + x1)/2, y0);
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uiDrawPathBezierTo(path, x1, y0, x1, y0, x1, (y0 + y1)/2);
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uiDrawPathBezierTo(path, x1, y1, x1, y1, (x1 + x0)/2, y1);
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uiDrawPathBezierTo(path, x0, y1, x0, y1, x0, (y0 + y1)/2);
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} else {
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uiDrawPathNewFigure(path, x0, y0 + radius);
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uiDrawPathBezierTo(path, x0 ,y0, x0, y0, (x0 + x1)/2, y0);
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uiDrawPathBezierTo(path, x1, y0, x1, y0, x1, y0 + radius);
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uiDrawPathLineTo(path, x1 , y1 - radius);
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uiDrawPathBezierTo(path, x1, y1, x1, y1, (x1 + x0)/2, y1);
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uiDrawPathBezierTo(path, x0, y1, x0, y1, x0, y1- radius);
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}
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} else {
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if (rect_height / 2 < radius) {
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uiDrawPathNewFigure(path, x0, (y0 + y1)/2);
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uiDrawPathBezierTo(path, x0 , y0, x0 , y0, x0 + radius, y0);
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uiDrawPathLineTo(path, x1 - radius, y0);
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uiDrawPathBezierTo(path, x1, y0, x1, y0, x1, (y0 + y1)/2);
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uiDrawPathBezierTo(path, x1, y1, x1, y1, x1 - radius, y1);
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uiDrawPathLineTo(path, x0 + radius, y1);
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uiDrawPathBezierTo(path, x0, y1, x0, y1, x0, (y0 + y1)/2);
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} else {
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uiDrawPathNewFigure(path, x0, y0 + radius);
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uiDrawPathBezierTo(path, x0 , y0, x0 , y0, x0 + radius, y0);
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uiDrawPathLineTo(path, x1 - radius, y0);
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uiDrawPathBezierTo(path, x1, y0, x1, y0, x1, y0 + radius);
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uiDrawPathLineTo(path, x1 , y1 - radius);
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uiDrawPathBezierTo(path, x1, y1, x1, y1, x1 - radius, y1);
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uiDrawPathLineTo(path, x0 + radius, y1);
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uiDrawPathBezierTo(path, x0, y1, x0, y1, x0, y1- radius);
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}
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}
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uiDrawPathCloseFigure(path);
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uiDrawPathEnd(path);
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crsourcergba(&source, 0.5, 0.5, 1, 1.0);
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uiDrawFill(p->Context, path, &source);
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crsourcergba(&source, 0.5, 0, 0, 0.5);
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sp.Thickness = 10.0;
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uiDrawStroke(p->Context, path, &source, &sp);
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uiDrawFreePath(path);
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}
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// curve to
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static void drawCSCurveTo(uiAreaDrawParams *p)
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{
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double x=25.6, y=128.0;
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double x1=102.4, y1=230.4,
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x2=153.6, y2=25.6,
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x3=230.4, y3=128.0;
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uiDrawBrush source;
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uiDrawStrokeParams sp;
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uiDrawPath *path;
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crsourcergba(&source, 0, 0, 0, 1);
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sp.Cap = uiDrawLineCapFlat;
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sp.Join = uiDrawLineJoinMiter;
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sp.MiterLimit = uiDrawDefaultMiterLimit;
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path = uiDrawNewPath(uiDrawFillModeWinding);
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uiDrawPathNewFigure(path, x, y);
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uiDrawPathBezierTo(path, x1, y1, x2, y2, x3, y3);
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uiDrawPathEnd(path);
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sp.Thickness = 10.0;
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uiDrawStroke(p->Context, path, &source, &sp);
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uiDrawFreePath(path);
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crsourcergba(&source, 1, 0.2, 0.2, 0.6);
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sp.Thickness = 6.0;
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path = uiDrawNewPath(uiDrawFillModeWinding);
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uiDrawPathNewFigure(path, x, y);
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uiDrawPathLineTo(path, x1, y1);
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uiDrawPathNewFigure(path, x2, y2);
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uiDrawPathLineTo(path, x3, y3);
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uiDrawPathEnd(path);
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uiDrawStroke(p->Context, path, &source, &sp);
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uiDrawFreePath(path);
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}
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// TODO dash
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// fill and stroke2
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static void drawCSFillAndStroke2(uiAreaDrawParams *p)
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{
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uiDrawBrush source;
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uiDrawStrokeParams sp;
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uiDrawPath *path;
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crsourcergba(&source, 0, 0, 0, 1);
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sp.Cap = uiDrawLineCapFlat;
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sp.Join = uiDrawLineJoinMiter;
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sp.MiterLimit = uiDrawDefaultMiterLimit;
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path = uiDrawNewPath(uiDrawFillModeWinding);
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uiDrawPathNewFigure(path, 128.0, 25.6);
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uiDrawPathLineTo(path, 230.4, 230.4);
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uiDrawPathLineTo(path, 230.4 - 102.4, 230.4 + 0.0);
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uiDrawPathBezierTo(path, 51.2, 230.4, 51.2, 128.0, 128.0, 128.0);
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uiDrawPathCloseFigure(path);
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uiDrawPathNewFigure(path, 64.0, 25.6);
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uiDrawPathLineTo(path, 64.0 + 51.2, 25.6 + 51.2);
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uiDrawPathLineTo(path, 64.0 + 51.2 -51.2, 25.6 + 51.2 + 51.2);
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uiDrawPathLineTo(path, 64.0 + 51.2 -51.2 -51.2, 25.6 + 51.2 + 51.2 -51.2);
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uiDrawPathCloseFigure(path);
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uiDrawPathEnd(path);
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sp.Thickness = 10.0;
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crsourcergba(&source, 0, 0, 1, 1);
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uiDrawFill(p->Context, path, &source);
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crsourcergba(&source, 0, 0, 0, 1);
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uiDrawStroke(p->Context, path, &source, &sp);
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uiDrawFreePath(path);
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}
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// TODO fill style (needs transforms)
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// TOOD gradient (radial gradient with two circles)
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// TODO image
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// TODO imagepattern
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// multi segment caps
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static void drawCSMultiCaps(uiAreaDrawParams *p)
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{
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uiDrawBrush source;
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uiDrawStrokeParams sp;
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uiDrawPath *path;
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crsourcergba(&source, 0, 0, 0, 1);
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sp.Join = uiDrawLineJoinMiter;
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sp.MiterLimit = uiDrawDefaultMiterLimit;
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path = uiDrawNewPath(uiDrawFillModeWinding);
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uiDrawPathNewFigure(path, 50.0, 75.0);
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uiDrawPathLineTo(path, 200.0, 75.0);
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uiDrawPathNewFigure(path, 50.0, 125.0);
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uiDrawPathLineTo(path, 200.0, 125.0);
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uiDrawPathNewFigure(path, 50.0, 175.0);
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uiDrawPathLineTo(path, 200.0, 175.0);
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uiDrawPathEnd(path);
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sp.Thickness = 30.0;
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sp.Cap = uiDrawLineCapRound;
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uiDrawStroke(p->Context, path, &source, &sp);
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uiDrawFreePath(path);
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}
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// rounded rectangle
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static void drawCSRoundRect(uiAreaDrawParams *p)
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{
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double x = 25.6, /* parameters like cairo_rectangle */
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y = 25.6,
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width = 204.8,
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height = 204.8,
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aspect = 1.0, /* aspect ratio */
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corner_radius = height / 10.0; /* and corner curvature radius */
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double radius = corner_radius / aspect;
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double degrees = M_PI / 180.0;
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uiDrawBrush source;
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uiDrawStrokeParams sp;
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uiDrawPath *path;
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crsourcergba(&source, 0, 0, 0, 1);
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sp.Cap = uiDrawLineCapFlat;
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sp.Join = uiDrawLineJoinMiter;
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sp.MiterLimit = uiDrawDefaultMiterLimit;
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path = uiDrawNewPath(uiDrawFillModeWinding);
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// this example differs because of counterclockwise arcs
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// the original went clockwise; we must go counterclockwise
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// top right corner
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uiDrawPathNewFigureWithArc(path,
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x + width - radius, y + radius,
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radius,
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0 * degrees, 90 * degrees);
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// top left corner
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uiDrawPathArcTo(path,
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x + radius, y + radius,
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radius,
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90 * degrees, 90 * degrees);
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// bottom left corner
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uiDrawPathArcTo(path,
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x + radius, y + height - radius,
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radius,
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180 * degrees, 90 * degrees);
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// bottom right corner
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uiDrawPathArcTo(path,
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x + width - radius, y + height - radius,
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radius,
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270 * degrees, 90 * degrees);
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uiDrawPathCloseFigure(path);
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uiDrawPathEnd(path);
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crsourcergba(&source, 0.5, 0.5, 1, 1);
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uiDrawFill(p->Context, path, &source);
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crsourcergba(&source, 0.5, 0, 0, 0.5);
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sp.Thickness = 10.0;
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uiDrawStroke(p->Context, path, &source, &sp);
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uiDrawFreePath(path);
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}
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// set line cap
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static void drawCSSetLineCap(uiAreaDrawParams *p)
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{
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uiDrawBrush source;
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uiDrawStrokeParams sp;
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uiDrawPath *path;
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crsourcergba(&source, 0, 0, 0, 1);
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sp.Cap = uiDrawLineCapFlat;
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sp.Join = uiDrawLineJoinMiter;
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sp.MiterLimit = uiDrawDefaultMiterLimit;
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sp.Thickness = 30.0;
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sp.Cap = uiDrawLineCapFlat;
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path = uiDrawNewPath(uiDrawFillModeWinding);
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uiDrawPathNewFigure(path, 64.0, 50.0);
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uiDrawPathLineTo(path, 64.0, 200.0);
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uiDrawPathEnd(path);
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uiDrawStroke(p->Context, path, &source, &sp);
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uiDrawFreePath(path);
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sp.Cap = uiDrawLineCapRound;
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path = uiDrawNewPath(uiDrawFillModeWinding);
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uiDrawPathNewFigure(path, 128.0, 50.0);
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uiDrawPathLineTo(path, 128.0, 200.0);
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uiDrawPathEnd(path);
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uiDrawStroke(p->Context, path, &source, &sp);
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uiDrawFreePath(path);
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sp.Cap = uiDrawLineCapSquare;
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path = uiDrawNewPath(uiDrawFillModeWinding);
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uiDrawPathNewFigure(path, 192.0, 50.0);
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uiDrawPathLineTo(path, 192.0, 200.0);
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uiDrawPathEnd(path);
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uiDrawStroke(p->Context, path, &source, &sp);
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uiDrawFreePath(path);
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// draw helping lines
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// keep the square cap to match the reference picture on the cairo website
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crsourcergba(&source, 1, 0.2, 0.2, 1);
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sp.Thickness = 2.56;
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path = uiDrawNewPath(uiDrawFillModeWinding);
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uiDrawPathNewFigure(path, 64.0, 50.0);
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uiDrawPathLineTo(path, 64.0, 200.0);
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uiDrawPathNewFigure(path, 128.0, 50.0);
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uiDrawPathLineTo(path, 128.0, 200.0);
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uiDrawPathNewFigure(path, 192.0, 50.0);
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uiDrawPathLineTo(path, 192.0, 200.0);
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uiDrawPathEnd(path);
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uiDrawStroke(p->Context, path, &source, &sp);
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uiDrawFreePath(path);
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}
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// set line join
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static void drawCSSetLineJoin(uiAreaDrawParams *p)
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{
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uiDrawBrush source;
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uiDrawStrokeParams sp;
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uiDrawPath *path;
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crsourcergba(&source, 0, 0, 0, 1);
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sp.Cap = uiDrawLineCapFlat;
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sp.Join = uiDrawLineJoinMiter;
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sp.MiterLimit = uiDrawDefaultMiterLimit;
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sp.Thickness = 40.96;
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path = uiDrawNewPath(uiDrawFillModeWinding);
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uiDrawPathNewFigure(path, 76.8, 84.48);
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uiDrawPathLineTo(path, 76.8 + 51.2, 84.48 -51.2);
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uiDrawPathLineTo(path, 76.8 + 51.2 + 51.2, 84.48 - 51.2 + 51.2);
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uiDrawPathEnd(path);
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sp.Join = uiDrawLineJoinMiter;
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uiDrawStroke(p->Context, path, &source, &sp);
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uiDrawFreePath(path);
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path = uiDrawNewPath(uiDrawFillModeWinding);
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uiDrawPathNewFigure(path, 76.8, 161.28);
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uiDrawPathLineTo(path, 76.8 + 51.2, 161.28 -51.2);
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uiDrawPathLineTo(path, 76.8 + 51.2 + 51.2, 161.28 - 51.2 + 51.2);
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uiDrawPathEnd(path);
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sp.Join = uiDrawLineJoinBevel;
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uiDrawStroke(p->Context, path, &source, &sp);
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uiDrawFreePath(path);
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path = uiDrawNewPath(uiDrawFillModeWinding);
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uiDrawPathNewFigure(path, 76.8, 238.08);
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uiDrawPathLineTo(path, 76.8 + 51.2, 238.08 -51.2);
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uiDrawPathLineTo(path, 76.8 + 51.2 + 51.2, 238.08 - 51.2 + 51.2);
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uiDrawPathEnd(path);
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sp.Join = uiDrawLineJoinRound;
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uiDrawStroke(p->Context, path, &source, &sp);
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uiDrawFreePath(path);
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}
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// TODO text
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// TODO text align center
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// TODO text extents
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static const struct drawtest tests[] = {
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{ "Original uiArea test", drawOriginal },
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{ "Arc test", drawArcs },
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@ -966,6 +1310,13 @@ static const struct drawtest tests[] = {
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{ "Direct2D: How to Draw and Fill a Complex Shape", drawD2DComplexShape },
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{ "cairo samples: arc", drawCSArc },
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{ "cairo samples: arc negative", drawCSArcNegative },
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{ "cairo samples: curve rectangle", drawCSCurveRectangle },
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{ "cairo samples: curve to", drawCSCurveTo },
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{ "cairo samples: fill and stroke2", drawCSFillAndStroke2 },
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{ "cairo samples: multi segment caps", drawCSMultiCaps },
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{ "cairo samples: rounded rectangle", drawCSRoundRect },
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{ "cairo samples: set line cap", drawCSSetLineCap },
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{ "cairo samples: set line join", drawCSSetLineJoin },
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{ NULL, NULL },
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};
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