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SDL_ph_mouse.c
218 lines (176 loc) · 6.14 KB
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/*
SDL - Simple DirectMedia Layer
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Copyright (C) 1997-2009 Sam Lantinga
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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Sam Lantinga
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slouken@libsdl.org
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*/
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#include "SDL_config.h"
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#include "SDL_mouse.h"
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#include "../../events/SDL_events_c.h"
#include "../SDL_cursor_c.h"
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#include "SDL_ph_mouse_c.h"
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struct WMcursor
{
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PhCursorDef_t *ph_cursor;
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};
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void
ph_FreeWMCursor(_THIS, WMcursor * cursor)
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{
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if (window != NULL) {
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SDL_Lock_EventThread();
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if (PtSetResource(window, Pt_ARG_CURSOR_TYPE, Ph_CURSOR_INHERIT, 0)
< 0) {
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/* TODO: output error msg */
}
SDL_Unlock_EventThread();
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}
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SDL_free(cursor);
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}
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WMcursor *
ph_CreateWMCursor(_THIS, Uint8 * data, Uint8 * mask, int w, int h, int hot_x,
int hot_y)
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{
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WMcursor *cursor;
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int clen, i;
unsigned char bit, databit, maskbit;
/* Allocate and initialize the cursor memory */
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if ((cursor = (WMcursor *) SDL_malloc(sizeof(WMcursor))) == NULL) {
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SDL_OutOfMemory();
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return (NULL);
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}
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SDL_memset(cursor, 0, sizeof(WMcursor));
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cursor->ph_cursor =
(PhCursorDef_t *) SDL_malloc(sizeof(PhCursorDef_t) + 32 * 4 * 2);
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if (cursor->ph_cursor == NULL) {
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SDL_SetError("ph_CreateWMCursor(): cursor malloc failed !\n");
return NULL;
}
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SDL_memset(cursor->ph_cursor, 0, (sizeof(PhCursorDef_t) + 32 * 4 * 2));
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cursor->ph_cursor->hdr.type = Ph_RDATA_CURSOR;
cursor->ph_cursor->size1.x = (short) w;
cursor->ph_cursor->size1.y = (short) h;
cursor->ph_cursor->offset1.x = (short) hot_x;
cursor->ph_cursor->offset1.y = (short) hot_y;
cursor->ph_cursor->bytesperline1 = (char) w / 8;
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cursor->ph_cursor->color1 = Pg_WHITE;
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cursor->ph_cursor->size2.x = (short) w;
cursor->ph_cursor->size2.y = (short) h;
cursor->ph_cursor->offset2.x = (short) hot_x;
cursor->ph_cursor->offset2.y = (short) hot_y;
cursor->ph_cursor->bytesperline2 = (char) w / 8;
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cursor->ph_cursor->color2 = Pg_BLACK;
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clen = (w / 8) * h;
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/* Copy the mask and the data to different bitmap planes */
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for (i = 0; i < clen; ++i) {
for (bit = 0; bit < 8; bit++) {
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databit = data[i] & (1 << bit);
maskbit = mask[i] & (1 << bit);
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cursor->ph_cursor->images[i] |= (databit == 0) ? maskbit : 0;
/* If the databit != 0, treat it as a black pixel and
* ignore the maskbit (can't do an inverted color) */
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cursor->ph_cursor->images[i + clen] |= databit;
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}
}
/* #bytes following the hdr struct */
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cursor->ph_cursor->hdr.len =
sizeof(PhCursorDef_t) + clen * 2 - sizeof(PhRegionDataHdr_t);
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return (cursor);
}
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PhCursorDef_t
ph_GetWMPhCursor(WMcursor * cursor)
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{
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return (*cursor->ph_cursor);
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}
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int
ph_ShowWMCursor(_THIS, WMcursor * cursor)
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{
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PtArg_t args[3];
int nargs = 0;
/* Don't do anything if the display is gone */
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if (window == NULL) {
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return (0);
}
/* looks like photon can't draw mouse cursor in direct mode */
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if (this->screen->flags & SDL_FULLSCREEN) {
/* disable the fake mouse in the fullscreen OpenGL mode */
if (this->screen->flags & SDL_INTERNALOPENGL) {
cursor = NULL;
} else {
return (0);
}
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}
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/* Set the photon cursor, or blank if cursor is NULL */
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if (cursor != NULL) {
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PtSetArg(&args[0], Pt_ARG_CURSOR_TYPE, Ph_CURSOR_BITMAP, 0);
/* Could set next to any PgColor_t value */
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PtSetArg(&args[1], Pt_ARG_CURSOR_COLOR, Ph_CURSOR_DEFAULT_COLOR, 0);
PtSetArg(&args[2], Pt_ARG_BITMAP_CURSOR, cursor->ph_cursor,
(cursor->ph_cursor->hdr.len + sizeof(PhRegionDataHdr_t)));
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nargs = 3;
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} else { /* Ph_CURSOR_NONE */
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PtSetArg(&args[0], Pt_ARG_CURSOR_TYPE, Ph_CURSOR_NONE, 0);
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nargs = 1;
}
SDL_Lock_EventThread();
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if (PtSetResources(window, nargs, args) < 0) {
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return (0);
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}
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SDL_Unlock_EventThread();
return (1);
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}
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void
ph_WarpWMCursor(_THIS, Uint16 x, Uint16 y)
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{
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short abs_x, abs_y;
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SDL_Lock_EventThread();
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PtGetAbsPosition(window, &abs_x, &abs_y);
PhMoveCursorAbs(PhInputGroup(NULL), x + abs_x, y + abs_y);
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SDL_Unlock_EventThread();
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}
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void
ph_CheckMouseMode(_THIS)
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{
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/* If the mouse is hidden and input is grabbed, we use relative mode */
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if (!(SDL_cursorstate & CURSOR_VISIBLE)
&& (this->input_grab != SDL_GRAB_OFF)) {
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mouse_relative = 1;
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} else {
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mouse_relative = 0;
}
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}
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void
ph_UpdateMouse(_THIS)
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{
PhCursorInfo_t phcursor;
short abs_x;
short abs_y;
/* Lock the event thread, in multi-threading environments */
SDL_Lock_EventThread();
/* synchronizing photon mouse cursor position and SDL mouse position, if cursor appears over window. */
PtGetAbsPosition(window, &abs_x, &abs_y);
PhQueryCursor(PhInputGroup(NULL), &phcursor);
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if (((phcursor.pos.x >= abs_x)
&& (phcursor.pos.x <= abs_x + this->screen->w))
&& ((phcursor.pos.y >= abs_y)
&& (phcursor.pos.y <= abs_y + this->screen->h))) {
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SDL_PrivateAppActive(1, SDL_APPMOUSEFOCUS);
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SDL_PrivateMouseMotion(0, 0, phcursor.pos.x - abs_x,
phcursor.pos.y - abs_y);
} else {
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SDL_PrivateAppActive(0, SDL_APPMOUSEFOCUS);
}
/* Unlock the event thread, in multi-threading environments */
SDL_Unlock_EventThread();
}
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/* vi: set ts=4 sw=4 expandtab: */