From 8d4c661c755012ff9ac020150931e0160c45ba4b Mon Sep 17 00:00:00 2001
From: cuz <cuz@b7a2c559-68d2-44c3-8de9-860c34a00d81>
Date: Sun, 28 Dec 2003 21:26:11 +0000
Subject: [PATCH] Make mouse driver loadable
git-svn-id: svn://svn.cc65.org/cc65/trunk@2852 b7a2c559-68d2-44c3-8de9-860c34a00d81
---
asminc/mouse-kernel.inc | 128 ++++++++++++++++++++++++++++++++++++++++
include/mouse.h | 96 +++++++++++++++---------------
2 files changed, 174 insertions(+), 50 deletions(-)
create mode 100644 asminc/mouse-kernel.inc
diff --git a/asminc/mouse-kernel.inc b/asminc/mouse-kernel.inc
new file mode 100644
index 000000000..006f3e475
--- /dev/null
+++ b/asminc/mouse-kernel.inc
@@ -0,0 +1,128 @@
+;/*****************************************************************************/
+;/* */
+;/* mouse-kernel.inc */
+;/* */
+;/* Mouse API */
+;/* */
+;/* */
+;/* */
+;/* (C) 2003 Ullrich von Bassewitz */
+;/* R�merstra�e 52 */
+;/* D-70794 Filderstadt */
+;/* EMail: uz@cc65.org */
+;/* */
+;/* */
+;/* */
+;/* */
+;/* This software is provided 'as-is', without any expressed or implied */
+;/* warranty. In no event will the authors be held liable for any damages */
+;/* arising from the use of this software. */
+;/* */
+;/* Permission is granted to anyone to use this software for any purpose, */
+;/* including commercial applications, and to alter it and redistribute it */
+;/* freely, subject to the following restrictions: */
+;/* */
+;/* 1. The origin of this software must not be misrepresented; you must not */
+;/* claim that you wrote the original software. If you use this software */
+;/* in a product, an acknowledgment in the product documentation would be */
+;/* appreciated but is not required. */
+;/* 2. Altered source versions must be plainly marked as such, and must not */
+;/* be misrepresented as being the original software. */
+;/* 3. This notice may not be removed or altered from any source */
+;/* distribution. */
+;/* */
+;/*****************************************************************************/
+
+
+
+
+;------------------------------------------------------------------------------
+; Error codes
+
+.enum
+ MOUSE_ERR_OK ; No error
+ MOUSE_ERR_NO_DRIVER ; No driver available
+ MOUSE_ERR_CANNOT_LOAD ; Error loading driver
+ MOUSE_ERR_INV_DRIVER ; Invalid driver
+ MOUSE_ERR_NO_DEVICE ; Mouse hardware not found
+.endenum
+
+;------------------------------------------------------------------------------
+; The driver header
+
+.struct MOUSE_HDR
+ ID .byte 3 ; Contains 0x6D, 0x6F, 0x75 ("mou")
+ VERSION .byte 1 ; Interface version
+ JUMPTAB .struct
+ INSTALL .addr
+ UNINSTALL .addr
+ HIDE .addr
+ SHOW .addr
+ BOX .addr
+ MOVE .addr
+ BUTTONS .addr
+ POS .addr
+ INFO .addr
+ .endstruct
+.endstruct
+
+;------------------------------------------------------------------------------
+; The mouse API version, stored in MOUSE_HDR::VERSION
+
+MOUSE_API_VERSION = $00
+
+;------------------------------------------------------------------------------
+; Mouse button definitions
+
+MOUSE_BTN_LEFT = $10
+MOUSE_BTN_RIGHT = $01
+
+;------------------------------------------------------------------------------
+; Structures used to return data from the mouse driver
+
+.struct MOUSE_POS
+ XCOORD .word
+ YCOORD .word
+.endstruct
+
+.struct MOUSE_INFO
+ POS .tag MOUSE_POS
+ BUTTONS .byte
+.endstruct
+
+
+;------------------------------------------------------------------------------
+; Variables
+
+ .global _mouse_drv ; Pointer to driver
+
+;------------------------------------------------------------------------------
+; C callable functions
+
+ .global _mouse_set_callbacks
+ .global _mouse_load_driver
+ .global _mouse_unload
+ .global _mouse_install
+ .global _mouse_uninstall
+ .global _mouse_hide
+ .global _mouse_show
+ .global _mouse_box
+ .global _mouse_move
+ .global _mouse_buttons
+ .global _mouse_pos
+ .global _mouse_info
+
+;------------------------------------------------------------------------------
+; Driver entry points
+
+ .global mouse_install
+ .global mouse_uninstall
+ .global mouse_hide
+ .global mouse_show
+ .global mouse_box
+ .global mouse_move
+ .global mouse_buttons
+ .global mouse_pos
+ .global mouse_info
+
+
diff --git a/include/mouse.h b/include/mouse.h
index 1f36675c4..cdc305315 100644
--- a/include/mouse.h
+++ b/include/mouse.h
@@ -6,10 +6,12 @@
/* */
/* */
/* */
-/* (C) 1999-2001 Ullrich von Bassewitz */
-/* Wacholderweg 14 */
-/* D-70597 Stuttgart */
-/* EMail: uz@musoftware.de */
+/* (C) 2003 Ullrich von Bassewitz */
+/* R�merstra�e 52 */
+/* D-70794 Filderstadt */
+/* EMail: uz@cc65.org */
+/* */
+/* */
/* */
/* */
/* This software is provided 'as-is', without any expressed or implied */
@@ -38,26 +40,18 @@
-/* Define __MOUSE__ for systems that support a mouse */
-#if defined(__ATARI__) || defined(__C64__) || defined(__C128__) || defined(__CBM510__) || defined(__GEOS__)
-# define __MOUSE__
-#else
-# error The target system does not support a mouse!
-# endif
-
-
-
/*****************************************************************************/
/* Definitions */
/*****************************************************************************/
-/* The different mouse types */
-#define MOUSE_TRAKBALL 0
-#define MOUSE_ST 1
-#define MOUSE_AMIGA 2
-#define MOUSE_CBM1351 3 /* 1351 mouse */
+/* Error codes */
+#define MOUSE_ERR_OK 0 /* No error */
+#define MOUSE_ERR_NO_DRIVER 1 /* No driver available */
+#define MOUSE_ERR_CANNOT_LOAD 2 /* Error loading driver */
+#define MOUSE_ERR_INV_DRIVER 3 /* Invalid driver */
+#define MOUSE_ERR_NO_DEVICE 4 /* Mouse hardware not found */
/* Mouse button masks */
#define MOUSE_BTN_LEFT 0x10
@@ -75,6 +69,24 @@ struct mouse_info {
unsigned char buttons; /* Mouse button mask */
};
+/* Structure containing mouse callback functions. These functions are declared
+ * in C notation here, but they cannot be C functions (at least not easily),
+ * since they may be called from within an interrupt.
+ */
+struct mouse_callbacks {
+
+ void (*hide) (void);
+ /* Hide the mouse cursor. */
+
+ void (*show) (void);
+ /* Show the mouse cursor */
+
+ void (*move) (void);
+ /* Move the mouse cursor. This function is called, even when the cursor
+ * is currently invisible.
+ */
+};
+
/*****************************************************************************/
@@ -83,45 +95,29 @@ struct mouse_info {
-unsigned char __fastcall__ mouse_init (unsigned char type);
-/* Setup the mouse interrupt handler. The mouse routines will use a predefined
- * system resource for the mouse port and mouse cursor:
- * C64: Port #0, Sprite #0
- * C128: Port #0, Sprite #0
- * GEOS: System defined port, Sprite #0
- * Atari: Port #0, PM #0
- * However, the mouse routines will not initialize this cursor or set a
- * specific shape - this is platform dependent and up to the user program.
- * The mouse cursor is moved if the mouse is moved (provided that the mouse
- * cursor is visible), and switched on and off in the show and hide functions.
- * The type parameter is needed on some systems to determine the type of
- * the mouse connected to the given port, on others it is ignored.
- * After calling this function, the mouse is invisble, the cursor is placed
- * at 0/0 (upper left corner), and the bounding box is reset to cover the
- * whole screen. Call mouse_show once to make the mouse cursor visible.
- * The function will return zero if a mouse was not found and a non zero
- * value if the mouse was found and initialized (or if there is no way to
- * detect a mouse reliably).
- */
+unsigned char __fastcall__ mouse_set_callbacks (const struct mouse_callbacks* c);
+/* Sets the callbacks to be used by the driver. */
-void __fastcall__ mouse_done (void);
-/* Disable the mouse, remove the interrupt handler. This function MUST be
- * called before terminating the program, otherwise odd things may happen.
- * If in doubt, install an exit handler (using atexit) that calls this
- * function.
- */
+unsigned char __fastcall__ mouse_load_driver (const char* driver);
+/* Load and install a mouse driver, return an error code. */
+
+unsigned char __fastcall__ mouse_unload (void);
+/* Uninstall, then unload the currently loaded driver. */
+
+unsigned char __fastcall__ mouse_install (void* driver);
+/* Install an already loaded driver. Returns an error code. */
+
+unsigned char __fastcall__ mouse_uninstall (void);
+/* Uninstall the currently loaded driver. Returns an error code. */
void __fastcall__ mouse_hide (void);
-/* Hide the mouse. This function doesn't do anything visible if no sprite is
- * used. The function manages a counter and may be called more than once.
- * For each call to mouse_hide there must be a call to mouse_show to make
+/* Hide the mouse. The function manages a counter and may be called more than
+ * once. For each call to mouse_hide there must be a call to mouse_show to make
* the mouse visible again.
*/
void __fastcall__ mouse_show (void);
-/* Show the mouse. This function doesn't do anything visible if no sprite is
- * used. See mouse_hide for more information.
- */
+/* Show the mouse. See mouse_hide for more information. */
void __fastcall__ mouse_box (int minx, int miny, int maxx, int maxy);
/* Set the bounding box for the mouse pointer movement. The mouse X and Y