catgl_ui_button.h

void caDrawButton(NVGcontext* vg, int preicon, const char* text, float x, float y, float w, float h, NVGcolor col, int f)
{
	NVGpaint bg;
	char icon[8];
	float cornerRadius = 4.0f;
	float tw = 0, iw = 0;

	if (!f) {
		bg = nvgLinearGradient(vg, x,y,x,y+h, nvgRGBA(255,255,255,isBlack(col)?16:32), nvgRGBA(0,0,0,isBlack(col)?16:32));
	} else {
		bg = nvgLinearGradient(vg, x,y,x,y+h, nvgRGBA(0,0,0,isBlack(col)?16:32), nvgRGBA(255,255,255,isBlack(col)?16:32));
	}
	nvgBeginPath(vg);
	nvgRoundedRect(vg, x+1,y+1, w-2,h-2, cornerRadius-1);
	if (!isBlack(col)) {
		nvgFillColor(vg, col);
		nvgFill(vg);
	}
	nvgFillPaint(vg, bg);
	nvgFill(vg);

	nvgBeginPath(vg);
	nvgRoundedRect(vg, x+0.5f,y+0.5f, w-1,h-1, cornerRadius-0.5f);
	nvgStrokeColor(vg, nvgRGBA(0,0,0,48));
	nvgStroke(vg);

	nvgFontSize(vg, 20.0f);
	nvgFontFace(vg, "sans-bold");
	tw = nvgTextBounds(vg, 0,0, text, NULL, NULL);
	if (preicon != 0) {
		nvgFontSize(vg, h*1.3f);
		nvgFontFace(vg, "icons");
		iw = nvgTextBounds(vg, 0,0, cpToUTF8(preicon,icon), NULL, NULL);
		iw += h*0.15f;

		nvgFontSize(vg, h*1.3f);
		nvgFontFace(vg, "icons");
		nvgFillColor(vg, nvgRGBA(255,255,255,96));
		nvgTextAlign(vg,NVG_ALIGN_LEFT|NVG_ALIGN_MIDDLE);
		nvgText(vg, x+w*0.5f-tw*0.5f-iw*0.75f, y+h*0.5f, cpToUTF8(preicon,icon), NULL);
	}

	nvgFontSize(vg, 20.0f);
	nvgFontFace(vg, "sans-bold");
	nvgTextAlign(vg, NVG_ALIGN_LEFT|NVG_ALIGN_MIDDLE);
	nvgFillColor(vg, nvgRGBA(0,0,0,160));
	nvgText(vg, x+w*0.5f-tw*0.5f+iw*0.25f,y+h*0.5f-1,text, NULL);
	nvgFillColor(vg, nvgRGBA(255,255,255,160));
	nvgText(vg, x+w*0.5f-tw*0.5f+iw*0.25f,y+h*0.5f,text, NULL);
}