1 files changed, 85 insertions, 0 deletions
diff --git a/frontends/calculator/CEdev/examples/gfx_clipping/src/main.c b/frontends/calculator/CEdev/examples/gfx_clipping/src/main.c
new file mode 100644
index 0000000..97f30eb
--- /dev/null
+++ b/frontends/calculator/CEdev/examples/gfx_clipping/src/main.c
@@ -0,0 +1,85 @@
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdint.h>
+#include <tice.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <graphx.h>
+
+/* Use some random color as the transparent one */
+#define TRANSPARENT_COLOR 10
+#define FONT_WIDTH        8
+#define FONT_HEIGHT       8
+
+void main(void) {
+    uint8_t key = 24;
+
+    /* Starting text posistion */
+    int x = (LCD_WIDTH / 2) - 20;
+    int y = (LCD_HEIGHT / 2) - 5;
+
+    int box_stride = 1;
+    int box_scale = 20;
+
+    /* Initialize the 8bpp graphics */
+    gfx_Begin();
+    gfx_FillScreen(gfx_black);
+
+    /* Setup the colors */
+    gfx_SetColor(gfx_white);
+    gfx_SetTextFGColor(gfx_red);
+
+    /* Set the transparent text background color */
+    gfx_SetTextBGColor(TRANSPARENT_COLOR);
+    gfx_SetTextTransparentColor(TRANSPARENT_COLOR);
+
+    /* Print some scaled font */
+    gfx_SetTextScale(2, 2);
+    gfx_PrintStringXY("This text is SCALED!!", 15, 10);
+
+    /* Wait for a key before continuing */
+    while (!os_GetCSC());
+
+    /* Configure the font to normal size, clipped, and monospaced */
+    gfx_SetTextScale(1, 1);
+    gfx_SetTextConfig(gfx_text_clip);
+    gfx_SetMonospaceFont(FONT_WIDTH);
+
+    /* Graphics routines draw to the back buffer */
+    gfx_SetDrawBuffer();
+
+    /* Run until the [ENTER] key is pressed */
+    do {
+        /* Check if any keys are pressed */
+        if (key == sk_Left)  { x--; }
+        if (key == sk_Right) { x++; }
+        if (key == sk_Down)  { y++; }
+        if (key == sk_Up)    { y--; }
+        if (key) {
+            gfx_SetClipRegion((LCD_WIDTH/2) - box_scale, (LCD_HEIGHT/2) - box_scale, (LCD_WIDTH/2) + box_scale, (LCD_HEIGHT/2) + box_scale);
+
+            gfx_FillScreen(gfx_black);
+            gfx_PrintStringXY("FUN WITH CLIPPING", x, y);
+
+            /* Draw a rectangle on the edges of the clipping region so we can see it */
+            gfx_Rectangle_NoClip((LCD_WIDTH/2) - box_scale, (LCD_HEIGHT/2) - box_scale, box_scale * 2, box_scale * 2);
+
+            /* Change the clipping region */
+            box_scale += box_stride;
+
+            /* Check if we should increase or decrease the clip region */
+            if (box_scale > 100 || box_scale < 10) {
+                box_stride = -box_stride;
+            }
+
+            /* Move the graphics so the user can see it */
+            gfx_SwapDraw();
+        }
+    } while ((key = os_GetCSC()) != sk_Enter);
+
+    /* Usual cleanup */
+    gfx_End();
+}