140 lines
3.0 KiB
C
140 lines
3.0 KiB
C
// 13 october 2015
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#include "test.h"
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static uiArea *area;
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static uiEntry *startAngle;
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static uiEntry *sweep;
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static uiCheckbox *negative;
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static uiCheckbox *radians;
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struct handler {
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uiAreaHandler ah;
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};
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static struct handler handler;
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// based on the cairo arc sample
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static void handlerDraw(uiAreaHandler *a, uiArea *area, uiAreaDrawParams *p)
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{
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double xc = 128.0;
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double yc = 128.0;
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double radius = 100.0;
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uiDrawBrush source;
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uiDrawStrokeParams sp;
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uiDrawPath *path;
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char *startText;
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char *sweepText;
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double factor;
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source.Type = uiDrawBrushTypeSolid;
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source.R = 0;
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source.G = 0;
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source.B = 0;
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source.A = 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.Dashes = NULL;
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sp.NumDashes = 0;
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sp.DashPhase = 0;
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startText = uiEntryText(startAngle);
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sweepText = uiEntryText(sweep);
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factor = uiPi / 180;
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if (uiCheckboxChecked(radians))
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factor = 1;
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sp.Thickness = 10.0;
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path = uiDrawNewPath(uiDrawFillModeWinding);
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uiDrawPathNewFigure(path, xc, yc);
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uiDrawPathArcTo(path,
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xc, yc,
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radius,
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atof(startText) * factor,
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atof(sweepText) * factor,
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uiCheckboxChecked(negative));
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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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uiFreeText(startText);
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uiFreeText(sweepText);
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}
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static void handlerMouseEvent(uiAreaHandler *a, uiArea *area, uiAreaMouseEvent *e)
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{
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// do nothing
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}
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static void handlerMouseCrossed(uiAreaHandler *ah, uiArea *a, int left)
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{
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// do nothing
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}
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static void handlerDragBroken(uiAreaHandler *ah, uiArea *a)
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{
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// do nothing
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}
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static int handlerKeyEvent(uiAreaHandler *ah, uiArea *a, uiAreaKeyEvent *e)
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{
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return 0;
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}
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static void entryChanged(uiEntry *e, void *data)
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{
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uiAreaQueueRedrawAll(area);
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}
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static void checkboxToggled(uiCheckbox *c, void *data)
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{
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uiAreaQueueRedrawAll(area);
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}
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uiGroup *makePage7a(void)
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{
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uiGroup *group;
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uiBox *box, *box2;
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handler.ah.Draw = handlerDraw;
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handler.ah.MouseEvent = handlerMouseEvent;
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handler.ah.MouseCrossed = handlerMouseCrossed;
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handler.ah.DragBroken = handlerDragBroken;
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handler.ah.KeyEvent = handlerKeyEvent;
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group = newGroup("Arc Test");
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box = newVerticalBox();
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uiGroupSetChild(group, uiControl(box));
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area = uiNewArea((uiAreaHandler *) (&handler));
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uiBoxAppend(box, uiControl(area), 1);
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box2 = newHorizontalBox();
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uiBoxAppend(box, uiControl(box2), 0);
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uiBoxAppend(box2, uiControl(uiNewLabel("Start Angle")), 0);
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startAngle = uiNewEntry();
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uiEntryOnChanged(startAngle, entryChanged, NULL);
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uiBoxAppend(box2, uiControl(startAngle), 1);
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box2 = newHorizontalBox();
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uiBoxAppend(box, uiControl(box2), 0);
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uiBoxAppend(box2, uiControl(uiNewLabel("Sweep")), 0);
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sweep = uiNewEntry();
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uiEntryOnChanged(sweep, entryChanged, NULL);
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uiBoxAppend(box2, uiControl(sweep), 1);
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negative = uiNewCheckbox("Negative");
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uiCheckboxOnToggled(negative, checkboxToggled, NULL);
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uiBoxAppend(box, uiControl(negative), 0);
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radians = uiNewCheckbox("Radians");
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uiCheckboxOnToggled(radians, checkboxToggled, NULL);
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uiBoxAppend(box, uiControl(radians), 0);
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return group;
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}
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