void xsCanvasContext::clearRect(float x, float y, float width, float height)
{
xsGraphics *gc = xsGetSystemGc();
xsSetColor(gc, XS_COLOR_WHITE);
xsFillRectangle(gc, x, y, width, height);
xsFlushScreen(x, y, x + width, y + height);
}
void xsCanvasContext::strokeRect(float x, float y, float width, float height)
{
xsGraphics *gc = xsGetSystemGc();
int i;
lineWidth = lineWidth > 1.0 ? lineWidth : 1.0;
//another way to draw rectangle with specified linwWidth.
// xsFillRectangle(gc, x - lineWidth + 1, y - lineWidth + 1, width + 2 * (lineWidth - 1), height + 2 * (lineWidth - 1), strokeColor);
// xsFillRectangle(gc, x, y, width, height, XS_COLOR_WHITE);
xsSetColor(gc, strokeColor);
for(i = 0; i < lineWidth; i++)
{
xsDrawRectangle(gc, x - i, y - i, width + 2*i, height + 2*i);
}
xsFlushScreen(x - lineWidth, y - lineWidth, x + width + 2*lineWidth, y + height + 2*lineWidth);
}
int DemoApp::start()
{
xsColor color = {255,255,255,255};
xsSetColor(xsGetSystemGc(), color);
xsGetScreenDimension(&width, &height);
xsFillRectangle(xsGetSystemGc(), 0, 0, width, height);//, xsArgbToColor(0xFFFFFFFF));
xsFlushScreen(0, 0, width - 1, height - 1);
const char * js = getManifest()->getStartup();
invokeJavascript(js, LOAD_JS_STRING);
x = (width - BOX_SIZE) / 2;
y = (height - BOX_SIZE) / 2;
//img = this->getResource()->loadImage(xsT("logo-48x48.jpg"));
//timer = xsStartTimer(20, _onTimeout, this);
return XS_EC_OK;
}
int DemoApp::onTimeout()
{
xsGraphics *gc = xsGetSystemGc();
// clear
xsColor color = {255, 255, 255, 255};
xsSetColor(gc, color);
xsFillRectangle(gc, x, y, BOX_SIZE, BOX_SIZE);//, xsArgbToColor(0xFFFFFFFF));
// draw new box
x += rateX;
y += rateY;
if (x < 0 || x + BOX_SIZE > width)
rateX = -rateX;
if (y < 0 || y + BOX_SIZE > height)
rateY = -rateY;
xsDrawImage(gc, img, x, y, 0, 0);
xsFlushScreen(0, 0, width - 1, height - 1);
return 0;
}
void xsCanvasContext::paintFill(xsGraphics *gc)
{
xsIterator iter = NULL;
xsArrayList lines = NULL;
xsLine *line = NULL;
xsRectangle *rect = NULL;
xsArc *arc = NULL;
xsBezierCurve* curve = NULL;
for (;;)
{
arc = static_cast<xsArc *>(xsArrayListIterate(arcs, &iter));
if (iter == NULL || arc == NULL)
break;
arc->fill(gc);
}
iter = NULL;
for (;;)
{
rect = static_cast<xsRectangle *>(xsArrayListIterate(rects, &iter));
if (iter == NULL || rect == NULL)
break;
rect->fill(gc);
}
iter = NULL;
for (;;)
{
curve = static_cast<xsBezierCurve *>(xsArrayListIterate(curves, &iter));
if (iter == NULL || curve == NULL)
break;
curve->fill(gc);
}
xsGraphicsGroup* groupTmp = graphicsGroups;
while(groupTmp != NULL)
{
lines = groupTmp ->lines;
int n = xsArrayListSize(lines);
if(n < 2)
return;
line = static_cast<xsLine *>(xsArrayListGet(lines, 0));
xsPoint *polygen = (xsPoint*)xsCalloc(sizeof(xsPoint)*(n + 1));
polygen[0].x = line ->x1;
polygen[0].y = line ->y1;
int i = 1;
iter = NULL;
for (;;)
{
line = static_cast<xsLine *>(xsArrayListIterate(lines, &iter));
if (iter == NULL || line == NULL)
break;
polygen[i].x = line ->x2;
polygen[i].y = line ->y2;
i++;
}
xsSetColor(gc, fillColor);
xsFillPolygon(gc, polygen, n + 1);
if(polygen != NULL)
{
xsFree(polygen);
polygen = NULL;
}
groupTmp = groupTmp ->next;
}
}