SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.

--HG--
extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/trunk%401938
This commit is contained in:
Sam Lantinga 2006-07-10 21:04:37 +00:00
parent 91a32b77a2
commit 0f030a1802
686 changed files with 117556 additions and 98661 deletions

View file

@ -25,239 +25,627 @@
#include "SDL_events.h"
#include "SDL_events_c.h"
#include "../video/SDL_cursor_c.h"
#include "../video/SDL_sysvideo.h"
#include "default_cursor.h"
/* These are static for our mouse handling code */
static Sint16 SDL_MouseX = 0;
static Sint16 SDL_MouseY = 0;
static Sint16 SDL_DeltaX = 0;
static Sint16 SDL_DeltaY = 0;
static Uint8 SDL_ButtonState = 0;
static int SDL_num_mice;
static int SDL_current_mouse;
static SDL_Mouse **SDL_mice;
/* Public functions */
int SDL_MouseInit(void)
{
/* The mouse is at (0,0) */
SDL_MouseX = 0;
SDL_MouseY = 0;
SDL_DeltaX = 0;
SDL_DeltaY = 0;
SDL_ButtonState = 0;
/* That's it! */
return(0);
}
void SDL_MouseQuit(void)
int
SDL_MouseInit(void)
{
return (0);
}
/* We lost the mouse, so post button up messages for all pressed buttons */
void SDL_ResetMouse(void)
SDL_Mouse *
SDL_GetMouse(int index)
{
Uint8 i;
for ( i = 0; i < sizeof(SDL_ButtonState)*8; ++i ) {
if ( SDL_ButtonState & SDL_BUTTON(i) ) {
SDL_PrivateMouseButton(SDL_RELEASED, i, 0, 0);
}
}
if (index < 0 || index >= SDL_num_mice) {
return NULL;
}
return SDL_mice[index];
}
Uint8 SDL_GetMouseState (int *x, int *y)
int
SDL_AddMouse(const SDL_Mouse * mouse, int index)
{
if ( x ) {
*x = SDL_MouseX;
}
if ( y ) {
*y = SDL_MouseY;
}
return(SDL_ButtonState);
SDL_Mouse **mice;
int selected_mouse;
/* Add the mouse to the list of mice */
if (index < 0 || index >= SDL_num_mice || SDL_mice[index]) {
mice =
(SDL_Mouse **) SDL_realloc(SDL_mice,
(SDL_num_mice + 1) * sizeof(*mice));
if (!mice) {
SDL_OutOfMemory();
return -1;
}
SDL_mice = mice;
index = SDL_num_mice++;
}
SDL_mice[index] = (SDL_Mouse *) SDL_malloc(sizeof(*SDL_mice[index]));
if (!SDL_mice[index]) {
SDL_OutOfMemory();
return -1;
}
*SDL_mice[index] = *mouse;
/* Create the default cursor for the mouse */
SDL_mice[index]->cursor_shown = SDL_TRUE;
selected_mouse = SDL_SelectMouse(index);
SDL_mice[index]->cur_cursor = NULL;
SDL_mice[index]->def_cursor =
SDL_CreateCursor(default_cdata, default_cmask, DEFAULT_CWIDTH,
DEFAULT_CHEIGHT, DEFAULT_CHOTX, DEFAULT_CHOTY);
SDL_SetCursor(SDL_mice[index]->def_cursor);
SDL_SelectMouse(selected_mouse);
return index;
}
Uint8 SDL_GetRelativeMouseState (int *x, int *y)
void
SDL_DelMouse(int index)
{
if ( x )
*x = SDL_DeltaX;
if ( y )
*y = SDL_DeltaY;
SDL_DeltaX = 0;
SDL_DeltaY = 0;
return(SDL_ButtonState);
SDL_Mouse *mouse = SDL_GetMouse(index);
if (!mouse) {
return;
}
mouse->def_cursor = NULL;
while (mouse->cursors) {
SDL_FreeCursor(mouse->cursors);
}
if (mouse->FreeMouse) {
mouse->FreeMouse(mouse);
}
SDL_free(mouse);
SDL_mice[index] = NULL;
}
static void ClipOffset(Sint16 *x, Sint16 *y)
void
SDL_ResetMouse(int index)
{
/* This clips absolute mouse coordinates when the apparent
display surface is smaller than the real display surface.
*/
if ( SDL_VideoSurface->offset ) {
*y -= SDL_VideoSurface->offset/SDL_VideoSurface->pitch;
*x -= (SDL_VideoSurface->offset%SDL_VideoSurface->pitch)/
SDL_VideoSurface->format->BytesPerPixel;
}
SDL_Mouse *mouse = SDL_GetMouse(index);
if (!mouse) {
return;
}
/* FIXME */
}
/* These are global for SDL_eventloop.c */
int SDL_PrivateMouseMotion(Uint8 buttonstate, int relative, Sint16 x, Sint16 y)
void
SDL_MouseQuit(void)
{
int posted;
Uint16 X, Y;
Sint16 Xrel;
Sint16 Yrel;
int i;
/* Don't handle mouse motion if there's no cursor surface */
if ( SDL_VideoSurface == NULL ) {
return(0);
}
for (i = 0; i < SDL_num_mice; ++i) {
SDL_DelMouse(i);
}
SDL_num_mice = 0;
SDL_current_mouse = 0;
/* Default buttonstate is the current one */
if ( ! buttonstate ) {
buttonstate = SDL_ButtonState;
}
if (SDL_mice) {
SDL_free(SDL_mice);
SDL_mice = NULL;
}
}
Xrel = x;
Yrel = y;
if ( relative ) {
/* Push the cursor around */
x = (SDL_MouseX+x);
y = (SDL_MouseY+y);
} else {
/* Do we need to clip {x,y} ? */
ClipOffset(&x, &y);
}
int
SDL_GetNumMice(void)
{
return SDL_num_mice;
}
/* Mouse coordinates range from 0 - width-1 and 0 - height-1 */
if ( x < 0 )
X = 0;
else
if ( x >= SDL_VideoSurface->w )
X = SDL_VideoSurface->w-1;
else
X = (Uint16)x;
int
SDL_SelectMouse(int index)
{
if (index >= 0 && index < SDL_num_mice) {
SDL_current_mouse = index;
}
return SDL_current_mouse;
}
if ( y < 0 )
Y = 0;
else
if ( y >= SDL_VideoSurface->h )
Y = SDL_VideoSurface->h-1;
else
Y = (Uint16)y;
SDL_WindowID
SDL_GetMouseFocusWindow()
{
SDL_Mouse *mouse = SDL_GetMouse(SDL_current_mouse);
/* If not relative mode, generate relative motion from clamped X/Y.
This prevents lots of extraneous large delta relative motion when
the screen is windowed mode and the mouse is outside the window.
*/
if ( ! relative ) {
Xrel = X-SDL_MouseX;
Yrel = Y-SDL_MouseY;
}
if (!mouse) {
return 0;
}
return mouse->focus;
}
/* Drop events that don't change state */
if ( ! Xrel && ! Yrel ) {
static int
FlushMouseMotion(void *param, SDL_Event * event)
{
if (event->type == SDL_MOUSEMOTION
&& event->motion.which == (Uint8) SDL_current_mouse) {
return 0;
} else {
return 1;
}
}
int
SDL_SetRelativeMouseMode(SDL_bool enabled)
{
SDL_Mouse *mouse = SDL_GetMouse(SDL_current_mouse);
if (!mouse) {
return -1;
}
/* Flush pending mouse motion */
mouse->flush_motion = SDL_TRUE;
SDL_PumpEvents();
mouse->flush_motion = SDL_FALSE;
SDL_FilterEvents(FlushMouseMotion, mouse);
/* Set the relative mode */
mouse->relative_mode = enabled;
/* Update cursor visibility */
SDL_SetCursor(NULL);
if (!enabled) {
/* Restore the expected mouse position */
SDL_WarpMouseInWindow(mouse->focus, mouse->x, mouse->y);
}
return 0;
}
SDL_bool
SDL_GetRelativeMouseMode()
{
SDL_Mouse *mouse = SDL_GetMouse(SDL_current_mouse);
if (!mouse) {
return SDL_FALSE;
}
return mouse->relative_mode;
}
Uint8
SDL_GetMouseState(int *x, int *y)
{
SDL_Mouse *mouse = SDL_GetMouse(SDL_current_mouse);
if (!mouse) {
if (x) {
*x = 0;
}
if (y) {
*y = 0;
}
return 0;
}
if (x) {
*x = mouse->x;
}
if (y) {
*y = mouse->y;
}
return mouse->buttonstate;
}
Uint8
SDL_GetRelativeMouseState(int *x, int *y)
{
SDL_Mouse *mouse = SDL_GetMouse(SDL_current_mouse);
if (!mouse) {
if (x) {
*x = 0;
}
if (y) {
*y = 0;
}
return 0;
}
if (x) {
*x = mouse->xdelta;
}
if (y) {
*y = mouse->ydelta;
}
mouse->xdelta = 0;
mouse->ydelta = 0;
return mouse->buttonstate;
}
void
SDL_SetMouseFocus(int index, SDL_WindowID windowID)
{
SDL_Mouse *mouse = SDL_GetMouse(index);
int i;
SDL_bool focus;
if (!mouse || (mouse->focus == windowID)) {
return;
}
/* See if the current window has lost focus */
if (mouse->focus) {
focus = SDL_FALSE;
for (i = 0; i < SDL_num_mice; ++i) {
SDL_Mouse *check;
if (i != index) {
check = SDL_GetMouse(i);
if (check && check->focus == mouse->focus) {
focus = SDL_TRUE;
break;
}
}
}
if (!focus) {
SDL_SendWindowEvent(mouse->focus, SDL_WINDOWEVENT_LEAVE, 0, 0);
}
}
mouse->focus = windowID;
if (mouse->focus) {
focus = SDL_FALSE;
for (i = 0; i < SDL_num_mice; ++i) {
SDL_Mouse *check;
if (i != index) {
check = SDL_GetMouse(i);
if (check && check->focus == mouse->focus) {
focus = SDL_TRUE;
break;
}
}
}
if (!focus) {
SDL_SendWindowEvent(mouse->focus, SDL_WINDOWEVENT_ENTER, 0, 0);
}
}
}
int
SDL_SendMouseMotion(int index, int relative, int x, int y)
{
SDL_Mouse *mouse = SDL_GetMouse(index);
int posted;
int xrel;
int yrel;
if (!mouse || mouse->flush_motion) {
return 0;
}
if (relative) {
/* Push the cursor around */
xrel = x;
yrel = y;
x = (mouse->x + xrel);
y = (mouse->y + yrel);
} else {
xrel = x - mouse->x;
yrel = y - mouse->y;
}
/* Drop events that don't change state */
if (!xrel && !yrel) {
#if 0
printf("Mouse event didn't change state - dropped!\n");
printf("Mouse event didn't change state - dropped!\n");
#endif
return(0);
}
return 0;
}
/* Update internal mouse state */
SDL_ButtonState = buttonstate;
SDL_MouseX = X;
SDL_MouseY = Y;
SDL_DeltaX += Xrel;
SDL_DeltaY += Yrel;
SDL_MoveCursor(SDL_MouseX, SDL_MouseY);
/* Update internal mouse state */
if (!mouse->relative_mode) {
mouse->x = x;
mouse->y = y;
}
mouse->xdelta += xrel;
mouse->ydelta += yrel;
/* Post the event, if desired */
posted = 0;
if ( SDL_ProcessEvents[SDL_MOUSEMOTION] == SDL_ENABLE ) {
SDL_Event event;
SDL_memset(&event, 0, sizeof(event));
event.type = SDL_MOUSEMOTION;
event.motion.state = buttonstate;
event.motion.x = X;
event.motion.y = Y;
event.motion.xrel = Xrel;
event.motion.yrel = Yrel;
if ( (SDL_EventOK == NULL) || (*SDL_EventOK)(&event) ) {
posted = 1;
SDL_PushEvent(&event);
}
}
return(posted);
/* Move the mouse cursor, if needed */
if (mouse->cursor_shown && !mouse->relative_mode &&
mouse->MoveCursor && mouse->cur_cursor) {
mouse->MoveCursor(mouse->cur_cursor);
}
/* Post the event, if desired */
posted = 0;
if (SDL_ProcessEvents[SDL_MOUSEMOTION] == SDL_ENABLE) {
SDL_Event event;
event.motion.type = SDL_MOUSEMOTION;
event.motion.which = (Uint8) index;
event.motion.state = mouse->buttonstate;
event.motion.x = mouse->x;
event.motion.y = mouse->y;
event.motion.xrel = xrel;
event.motion.yrel = yrel;
event.motion.windowID = mouse->focus;
posted = (SDL_PushEvent(&event) > 0);
}
return posted;
}
int SDL_PrivateMouseButton(Uint8 state, Uint8 button, Sint16 x, Sint16 y)
int
SDL_SendMouseButton(int index, Uint8 state, Uint8 button)
{
SDL_Event event;
int posted;
int move_mouse;
Uint8 buttonstate;
SDL_Mouse *mouse = SDL_GetMouse(index);
int posted;
Uint8 type;
SDL_memset(&event, 0, sizeof(event));
if (!mouse) {
return 0;
}
/* Check parameters */
if ( x || y ) {
ClipOffset(&x, &y);
move_mouse = 1;
/* Mouse coordinates range from 0 - width-1 and 0 - height-1 */
if ( x < 0 )
x = 0;
else
if ( x >= SDL_VideoSurface->w )
x = SDL_VideoSurface->w-1;
/* Figure out which event to perform */
switch (state) {
case SDL_PRESSED:
if (mouse->buttonstate & SDL_BUTTON(button)) {
/* Ignore this event, no state change */
return 0;
}
type = SDL_MOUSEBUTTONDOWN;
mouse->buttonstate |= SDL_BUTTON(button);
break;
case SDL_RELEASED:
if (!(mouse->buttonstate & SDL_BUTTON(button))) {
/* Ignore this event, no state change */
return 0;
}
type = SDL_MOUSEBUTTONUP;
mouse->buttonstate &= ~SDL_BUTTON(button);
break;
default:
/* Invalid state -- bail */
return 0;
}
if ( y < 0 )
y = 0;
else
if ( y >= SDL_VideoSurface->h )
y = SDL_VideoSurface->h-1;
} else {
move_mouse = 0;
}
if ( ! x )
x = SDL_MouseX;
if ( ! y )
y = SDL_MouseY;
/* Figure out which event to perform */
buttonstate = SDL_ButtonState;
switch ( state ) {
case SDL_PRESSED:
event.type = SDL_MOUSEBUTTONDOWN;
buttonstate |= SDL_BUTTON(button);
break;
case SDL_RELEASED:
event.type = SDL_MOUSEBUTTONUP;
buttonstate &= ~SDL_BUTTON(button);
break;
default:
/* Invalid state -- bail */
return(0);
}
/* Update internal mouse state */
SDL_ButtonState = buttonstate;
if ( move_mouse ) {
SDL_MouseX = x;
SDL_MouseY = y;
SDL_MoveCursor(SDL_MouseX, SDL_MouseY);
}
/* Post the event, if desired */
posted = 0;
if ( SDL_ProcessEvents[event.type] == SDL_ENABLE ) {
event.button.state = state;
event.button.button = button;
event.button.x = x;
event.button.y = y;
if ( (SDL_EventOK == NULL) || (*SDL_EventOK)(&event) ) {
posted = 1;
SDL_PushEvent(&event);
}
}
return(posted);
/* Post the event, if desired */
posted = 0;
if (SDL_ProcessEvents[type] == SDL_ENABLE) {
SDL_Event event;
event.type = type;
event.button.which = (Uint8) index;
event.button.state = state;
event.button.button = button;
event.button.x = mouse->x;
event.button.y = mouse->y;
event.button.windowID = mouse->focus;
posted = (SDL_PushEvent(&event) > 0);
}
return posted;
}
int
SDL_SendMouseWheel(int index, int motion)
{
SDL_Mouse *mouse = SDL_GetMouse(index);
int posted;
if (!mouse || !motion) {
return 0;
}
/* Post the event, if desired */
posted = 0;
if (SDL_ProcessEvents[SDL_MOUSEWHEEL] == SDL_ENABLE) {
SDL_Event event;
event.type = SDL_MOUSEWHEEL;
event.wheel.which = (Uint8) index;
event.wheel.motion = motion;
event.wheel.windowID = mouse->focus;
posted = (SDL_PushEvent(&event) > 0);
}
return posted;
}
void
SDL_WarpMouseInWindow(SDL_WindowID windowID, int x, int y)
{
SDL_Mouse *mouse = SDL_GetMouse(SDL_current_mouse);
if (!mouse) {
return;
}
if (mouse->WarpMouse) {
mouse->WarpMouse(mouse, windowID, x, y);
} else {
SDL_SetMouseFocus(SDL_current_mouse, windowID);
SDL_SendMouseMotion(SDL_current_mouse, 0, x, y);
}
}
SDL_Cursor *
SDL_CreateCursor(const Uint8 * data, const Uint8 * mask,
int w, int h, int hot_x, int hot_y)
{
SDL_Mouse *mouse = SDL_GetMouse(SDL_current_mouse);
SDL_Surface *surface;
SDL_Cursor *cursor;
int x, y;
Uint32 *pixel;
Uint8 datab, maskb;
const Uint32 black = 0xFF000000;
const Uint32 white = 0xFFFFFFFF;
const Uint32 transparent = 0x00000000;
if (!mouse) {
SDL_SetError("No mice are initialized");
return NULL;
}
if (!mouse->CreateCursor) {
SDL_SetError("Current mouse doesn't have cursor support");
return NULL;
}
/* Sanity check the hot spot */
if ((hot_x < 0) || (hot_y < 0) || (hot_x >= w) || (hot_y >= h)) {
SDL_SetError("Cursor hot spot doesn't lie within cursor");
return NULL;
}
/* Make sure the width is a multiple of 8 */
w = ((w + 7) & ~7);
/* Create the surface from a bitmap */
surface =
SDL_CreateRGBSurface(0, w, h, 32, 0x00FF0000, 0x0000FF00, 0x000000FF,
0xFF000000);
if (!surface) {
return NULL;
}
for (y = 0; y < h; ++y) {
pixel = (Uint32 *) ((Uint8 *) surface->pixels + y * surface->pitch);
for (x = 0; x < w; ++x) {
if ((x % 8) == 0) {
datab = *data++;
maskb = *mask++;
}
if (maskb & 0x80) {
*pixel++ = (datab & 0x80) ? black : white;
} else {
*pixel++ = (datab & 0x80) ? black : transparent;
}
datab <<= 1;
maskb <<= 1;
}
}
cursor = mouse->CreateCursor(surface, hot_x, hot_y);
if (cursor) {
cursor->mouse = mouse;
cursor->next = mouse->cursors;
mouse->cursors = cursor;
}
SDL_FreeSurface(surface);
return cursor;
}
/* SDL_SetCursor(NULL) can be used to force the cursor redraw,
if this is desired for any reason. This is used when setting
the video mode and when the SDL window gains the mouse focus.
*/
void
SDL_SetCursor(SDL_Cursor * cursor)
{
SDL_Mouse *mouse = SDL_GetMouse(SDL_current_mouse);
if (!mouse) {
SDL_SetError("No mice are initialized");
return;
}
/* Set the new cursor */
if (cursor) {
/* Make sure the cursor is still valid for this mouse */
SDL_Cursor *found;
for (found = mouse->cursors; found; found = found->next) {
if (found == cursor) {
break;
}
}
if (!found) {
SDL_SetError("Cursor not associated with the current mouse");
return;
}
mouse->cur_cursor = cursor;
} else {
cursor = mouse->cur_cursor;
}
if (cursor && mouse->cursor_shown && !mouse->relative_mode) {
if (mouse->ShowCursor) {
mouse->ShowCursor(cursor);
}
} else {
if (mouse->ShowCursor) {
mouse->ShowCursor(NULL);
}
}
}
SDL_Cursor *
SDL_GetCursor(void)
{
SDL_Mouse *mouse = SDL_GetMouse(SDL_current_mouse);
if (!mouse) {
return NULL;
}
return mouse->cur_cursor;
}
void
SDL_FreeCursor(SDL_Cursor * cursor)
{
SDL_Mouse *mouse;
SDL_Cursor *curr, *prev;
if (!cursor) {
return;
}
mouse = cursor->mouse;
if (cursor == mouse->def_cursor) {
return;
}
if (cursor == mouse->cur_cursor) {
SDL_SetCursor(mouse->def_cursor);
}
for (prev = NULL, curr = mouse->cursors; curr;
prev = curr, curr = curr->next) {
if (curr == cursor) {
if (prev) {
prev->next = curr->next;
} else {
mouse->cursors = curr->next;
}
if (mouse->FreeCursor) {
mouse->FreeCursor(curr);
}
return;
}
}
}
int
SDL_ShowCursor(int toggle)
{
SDL_Mouse *mouse = SDL_GetMouse(SDL_current_mouse);
SDL_bool shown;
if (!mouse) {
return 0;
}
shown = mouse->cursor_shown;
if (toggle >= 0) {
if (toggle) {
mouse->cursor_shown = SDL_TRUE;
} else {
mouse->cursor_shown = SDL_FALSE;
}
if (mouse->cursor_shown != shown) {
SDL_SetCursor(NULL);
}
}
return shown;
}
/* vi: set ts=4 sw=4 expandtab: */