-/*\r
-** Calibrate lightpen drivers to the current video hardware.\r
-**\r
-** 2013-06-17, Greg King\r
-**\r
-*/\r
-\r
-\r
-#include <conio.h>\r
-#include <mouse.h>\r
-\r
-\r
-#define COMMAND1 "Adjust by clicking on line."\r
-#define COMMAND2 "Finish by clicking off bar."\r
-\r
-\r
-/* There is a delay between when the VIC sends its signal, and when the display\r
-** shows that signal. There is another delay between the display and when the\r
-** lightpen says that it saw that signal. Each display and pen is different.\r
-** Therefore, the driver must be calibrated to them. A white bar is painted on\r
-** the screen; and, a line is drawn down the middle of it. When the user\r
-** clicks on that line, the difference between its position and where the VIC\r
-** thinks that the pen is pointing becomes an offset that is subtracted from\r
-** what the VIC sees.\r
-*/\r
-void __fastcall__ pen_calibrate (unsigned char *XOffset)\r
-{\r
- unsigned char oldBg = bgcolor (COLOR_BLUE);\r
- unsigned char oldText = textcolor (COLOR_GRAY3);\r
- unsigned char oldRev = revers (1);\r
- unsigned char sprite0Color = VIC.spr_color[0];\r
- unsigned char width, width2, height, height4, height8;\r
- struct mouse_info info;\r
-\r
- screensize (&width, &height);\r
- width2 = width / 2;\r
- height4 = height / 4;\r
- height8 = height4 * 8;\r
-\r
- /* Draw a bar and line. */\r
-\r
- clrscr ();\r
- cclearxy (0, height4, height4 * width);\r
- cvlinexy (width2, height4 + 1, height4 - 2);\r
-\r
- /* Print instructions. */\r
-\r
- revers (0);\r
- cputsxy (width2 - (sizeof COMMAND1) / 2, height / 2 + 1, COMMAND1);\r
- cputsxy (width2 - (sizeof COMMAND2) / 2, height / 2 + 3, COMMAND2);\r
-\r
- VIC.spr_color[0] = COLOR_GRAY2;\r
- mouse_show ();\r
- mouse_move (width2 * 8, height8 / 2);\r
-\r
- for (;;) {\r
- /* Wait for the main button to be released. */\r
-\r
- do ; while ((mouse_buttons () & MOUSE_BTN_LEFT));\r
-\r
- /* Wait for the main button to be pressed. */\r
-\r
- do {\r
- mouse_info (&info);\r
- } while (!(info.buttons & MOUSE_BTN_LEFT));\r
-\r
- /* Find out if the pen is on or off the bar. */\r
-\r
- if (info.pos.y < height8 || info.pos.y >= height8 * 2) {\r
- break;\r
- }\r
-\r
- /* On the bar; adjust the offset. */\r
- /* Characters are eight pixels wide.\r
- ** The VIC-II sees every other pixel;\r
- ** so, we use half of the difference.\r
- */\r
-\r
- *XOffset += (info.pos.x - (width2 * 8 + 8/2)) / 2;\r
- }\r
-\r
- /* Off the bar; wait for the main button to be released. */\r
-\r
- do ; while ((mouse_buttons () & MOUSE_BTN_LEFT));\r
-\r
- mouse_hide ();\r
- VIC.spr_color[0] = sprite0Color;\r
- revers (oldRev);\r
- textcolor (oldText);\r
- bgcolor (oldBg);\r
- clrscr ();\r
-}\r
+/*
+** Calibrate lightpen drivers to the current video hardware.
+**
+** 2013-07-25, Greg King
+**
+*/
+
+
+#include <conio.h>
+#include <mouse.h>
+#include <pen.h>
+
+
+#define COMMAND1 "Adjust by clicking on line."
+#define COMMAND2 "Finish by clicking off bar."
+
+
+/* There is a delay between when the VIC sends its signal, and when the display
+** shows that signal. There is another delay between the display and when the
+** lightpen says that it saw that signal. Each display and pen is different.
+** Therefore, the driver must be calibrated to them. A white bar is painted on
+** the screen; and, a line is drawn down the middle of it. When the user
+** clicks on that line, the difference between its position and where the VIC
+** thinks that the pen is pointing becomes an offset that is subtracted from
+** what the VIC sees.
+*/
+void __fastcall__ pen_calibrate (unsigned char *XOffset)
+{
+ unsigned char oldBg = bgcolor (COLOR_BLUE);
+ unsigned char oldText = textcolor (COLOR_GRAY3);
+ unsigned char oldRev = revers (1);
+ unsigned char sprite0Color = VIC.spr_color[0];
+ unsigned char width, width2, height, height4, height8;
+ struct mouse_info info;
+
+ screensize (&width, &height);
+ width2 = width / 2;
+ height4 = height / 4;
+ height8 = height4 * 8;
+
+ /* Draw a bar and line. */
+
+ clrscr ();
+ cclearxy (0, height4, height4 * width);
+ cvlinexy (width2, height4 + 1, height4 - 2);
+
+ /* Print instructions. */
+
+ revers (0);
+ cputsxy (width2 - (sizeof COMMAND1) / 2, height / 2 + 1, COMMAND1);
+ cputsxy (width2 - (sizeof COMMAND2) / 2, height / 2 + 3, COMMAND2);
+
+ VIC.spr_color[0] = COLOR_GRAY2;
+ mouse_show ();
+ mouse_move (width2 * 8, height8 / 2);
+
+ for (;;) {
+ /* Wait for the main button to be released. */
+
+ do ; while ((mouse_buttons () & MOUSE_BTN_LEFT));
+
+ /* Wait for the main button to be pressed. */
+
+ do {
+ mouse_info (&info);
+ } while (!(info.buttons & MOUSE_BTN_LEFT));
+
+ /* Find out if the pen is on or off the bar. */
+
+ if (info.pos.y < height8 || info.pos.y >= height8 * 2) {
+ break;
+ }
+
+ /* On the bar; adjust the offset. */
+ /* Characters are eight pixels wide.
+ ** The VIC-II sees every other pixel;
+ ** so, we use half of the difference.
+ */
+
+ *XOffset += (info.pos.x - (width2 * 8 + 8/2)) / 2;
+ }
+
+ /* Off the bar; wait for the main button to be released. */
+
+ do ; while ((mouse_buttons () & MOUSE_BTN_LEFT));
+
+ mouse_hide ();
+ VIC.spr_color[0] = sprite0Color;
+ revers (oldRev);
+ textcolor (oldText);
+ bgcolor (oldBg);
+ clrscr ();
+}
projects / cc65 / blobdiff