Implement a "Toggle Button" using a checkbox with a custom draw.

Updated the widgets demo to show this.

demos/modules/gwin/widgets/main.c

@@ -87,7 +87,7 @@ static GHandle		ghConsole;
 static GHandle		ghPgButtons, ghPgSliders, ghPgCheckboxes, ghPgLabels, ghPgRadios, ghPgLists, ghPgImages, ghPgProgressbars;
 static GHandle		ghButton1, ghButton2, ghButton3, ghButton4;
 static GHandle		ghSlider1, ghSlider2, ghSlider3, ghSlider4;
-static GHandle		ghCheckbox1, ghCheckbox2, ghCheckDisableAll;
+static GHandle		ghCheckbox1, ghCheckbox2, ghCheckbox3, ghCheckDisableAll;
 static GHandle		ghLabelSlider1, ghLabelSlider2, ghLabelSlider3, ghLabelSlider4, ghLabelRadio1;
 static GHandle		ghRadio1, ghRadio2;
 static GHandle		ghRadioBlack, ghRadioWhite, ghRadioYellow;
@@ -303,7 +303,7 @@ static void createWidgets(void) {
 	ghSlider4 = gwinSliderCreate(0, &wi);
 	gwinSliderSetPosition(ghSlider4, 76);
 
-	// Checkboxes - for the 2nd checkbox we apply special drawing before making it visible
+	// Checkboxes - for the 2nd and 3rd checkbox we apply special drawing before making it visible
 	wi.g.parent = ghPgCheckboxes;
 	wi.g.width = CHECKBOX_WIDTH; wi.g.height = CHECKBOX_HEIGHT; wi.g.x = 5;
 	wi.g.y = 5; wi.text = "C1";
@@ -311,8 +311,11 @@ static void createWidgets(void) {
 	wi.customDraw = gwinCheckboxDraw_CheckOnRight;
 	wi.g.y += wi.g.height+1; wi.text = "C2";
 	ghCheckbox2 = gwinCheckboxCreate(0, &wi);
-	wi.customDraw = 0; wi.g.width = DISABLEALL_WIDTH;
+	wi.customDraw = gwinCheckboxDraw_Button;
+	wi.g.y += wi.g.height+1; wi.text = "C3"; wi.g.width = BUTTON_WIDTH; wi.g.height = BUTTON_HEIGHT;
+	ghCheckbox3 = gwinCheckboxCreate(0, &wi);
 	wi.g.y += wi.g.height+1; wi.text = "Disable All";
+	wi.customDraw = 0; wi.g.width = DISABLEALL_WIDTH; wi.g.height = CHECKBOX_HEIGHT;
 	ghCheckDisableAll = gwinCheckboxCreate(0, &wi);
 
     // Labels
@@ -478,6 +481,7 @@ static void setEnabled(bool_t ena) {
 	// Checkboxes we need to do individually so we don't disable the checkbox to re-enable everything
 	gwinSetEnabled(ghCheckbox1, ena);
 	gwinSetEnabled(ghCheckbox2, ena);
+	gwinSetEnabled(ghCheckbox3, ena);
 	//gwinSetEnabled(ghCheckDisableAll, TRUE);
 }
 

docs/releases.txt

@@ -13,6 +13,9 @@ FEATURE:	New Tabset GWIN widget
 FEATURE:	New keyboard driver interface with drivers for Win32 and X
 FEATURE:	Support for keyboard layouts for non-english keyboards
 FEATURE:	GDISP now supports pixmaps (in memory drawing)
+FEATURE:	Rename files to improve experience in certain brain-dead IDE's
+FEATURE:	Add a checkbox "Toggle Button" custom draw
+FEATURE:	Add Tetris as an application demo.
 
 
 *** Release 2.2 ***

src/gwin/gwin_checkbox.c

@@ -16,6 +16,10 @@
 
 #include "gwin_class.h"
 
+// Parameters for button custom draw
+#define TOP_FADE				50		// (TOP_FADE/255)% fade to white for top of button
+#define BOTTOM_FADE				25		// (BOTTOM_FADE/255)% fade to black for bottom of button
+
 // Our checked state
 #define GCHECKBOX_FLG_CHECKED		(GWIN_FIRST_CONTROL_FLAG<<0)
 
@@ -204,4 +208,41 @@ void gwinCheckboxDraw_CheckOnRight(GWidgetObject *gw, void *param) {
 	#undef gcw
 }
 
+#if GWIN_FLAT_STYLING
+	void gwinCheckboxDraw_Button(GWidgetObject *gw, void *param) {
+		const GColorSet *	pcol;
+		(void)				param;
+
+		if (gw->g.vmt != (gwinVMT *)&checkboxVMT)	return;
+		pcol = getDrawColors(gw);
+
+		gdispGFillStringBox(gw->g.display, gw->g.x, gw->g.y, gw->g.width-1, gw->g.height-1, gw->text, gw->g.font, pcol->text, pcol->fill, justifyCenter);
+		gdispGDrawLine(gw->g.display, gw->g.x+gw->g.width-1, gw->g.y, gw->g.x+gw->g.width-1, gw->g.y+gw->g.height-1, pcol->edge);
+		gdispGDrawLine(gw->g.display, gw->g.x, gw->g.y+gw->g.height-1, gw->g.x+gw->g.width-2, gw->g.y+gw->g.height-1, pcol->edge);
+	}
+#else
+	void gwinCheckboxDraw_Button(GWidgetObject *gw, void *param) {
+		const GColorSet *	pcol;
+		fixed				alpha;
+		fixed				dalpha;
+		coord_t				i;
+		color_t				tcol, bcol;
+		(void)				param;
+
+		if (gw->g.vmt != (gwinVMT *)&checkboxVMT)	return;
+		pcol = getDrawColors(gw);
+
+		/* Fill the box blended from variants of the fill color */
+		tcol = gdispBlendColor(White, pcol->fill, TOP_FADE);
+		bcol = gdispBlendColor(Black, pcol->fill, BOTTOM_FADE);
+		dalpha = FIXED(255)/gw->g.height;
+		for(alpha = 0, i = 0; i < gw->g.height; i++, alpha += dalpha)
+			gdispGDrawLine(gw->g.display, gw->g.x, gw->g.y+i, gw->g.x+gw->g.width-2, gw->g.y+i, gdispBlendColor(bcol, tcol, NONFIXED(alpha)));
+
+		gdispGDrawStringBox(gw->g.display, gw->g.x, gw->g.y, gw->g.width-1, gw->g.height-1, gw->text, gw->g.font, pcol->text, justifyCenter);
+		gdispGDrawLine(gw->g.display, gw->g.x+gw->g.width-1, gw->g.y, gw->g.x+gw->g.width-1, gw->g.y+gw->g.height-1, pcol->edge);
+		gdispGDrawLine(gw->g.display, gw->g.x, gw->g.y+gw->g.height-1, gw->g.x+gw->g.width-2, gw->g.y+gw->g.height-1, pcol->edge);
+	}
+#endif
+
 #endif /* (GFX_USE_GWIN && GWIN_NEED_CHECKBOX) */

src/gwin/gwin_checkbox.h

@@ -116,6 +116,7 @@ bool_t gwinCheckboxIsChecked(GHandle gh);
  */
 void gwinCheckboxDraw_CheckOnLeft(GWidgetObject *gw, void *param);
 void gwinCheckboxDraw_CheckOnRight(GWidgetObject *gw, void *param);
+void gwinCheckboxDraw_Button(GWidgetObject *gw, void *param);
 /** @} */
 
 #ifdef __cplusplus