Mercurial > sdl-ios-xcode
view src/video/riscos/SDL_riscosmouse.c @ 2349:0381047f2210 gsoc2008_iphone
The class SDL_uikitappdelegate acts as the UIApplicationDelegate for an iPhone SDL project. This class is reponsible for application control flow, including initial setup of working directory, forwarding command line arguments to the user's main function, and handling application termination.
author | Holmes Futrell <hfutrell@umail.ucsb.edu> |
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date | Thu, 17 Jul 2008 22:29:37 +0000 |
parents | c121d94672cb |
children | 99210400e8b9 |
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/* SDL - Simple DirectMedia Layer Copyright (C) 1997-2004 Sam Lantinga This library is free software; you can redistribute it and/or modify it under the terms of the GNU Library General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. 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 Library General Public License for more details. You should have received a copy of the GNU Library General Public License along with this library; if not, write to the Free Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA Sam Lantinga slouken@libsdl.org */ #include "SDL_config.h" /* File added by Alan Buckley (alan_baa@hotmail.com) for RISC OS compatability 27 March 2003 Implements mouse cursor shape definitions and positioning */ #include "SDL_mouse.h" #include "../../events/SDL_events_c.h" #include "SDL_riscosmouse_c.h" #include "kernel.h" #include "swis.h" static WMcursor *current_cursor = NULL; static WMcursor *defined_cursor = NULL; extern int mouseInWindow; /* Area to save cursor palette colours changed by SDL. Actual values will be read before we change to the SDL cursor */ static Uint8 wimp_cursor_palette[2][5] = { {1, 25, 255, 255, 255}, {3, 25, 255, 255, 255} }; static int cursor_palette_saved = 0; void WIMP_SaveCursorPalette(); void WIMP_RestoreWimpCursor(); void WIMP_SetSDLCursorPalette(); void RISCOS_FreeWMCursor(_THIS, WMcursor * cursor) { SDL_free(cursor->data); SDL_free(cursor); } WMcursor * RISCOS_CreateWMCursor(_THIS, Uint8 * data, Uint8 * mask, int w, int h, int hot_x, int hot_y) { WMcursor *cursor; Uint8 *cursor_data; Uint8 *ptr; int i, j, k; int data_byte, mask_byte; /* Check to make sure the cursor size is okay */ if ((w > 32) || (h > 32)) { SDL_SetError("Only with width and height <= 32 pixels are allowed"); return (NULL); } /* Allocate the cursor */ cursor = (WMcursor *) SDL_malloc(sizeof(*cursor)); if (cursor == NULL) { SDL_SetError("Out of memory"); return (NULL); } /* Note: SDL says width must be a multiple of 8 */ cursor_data = SDL_malloc(w / 4 * h); if (cursor_data == NULL) { SDL_free(cursor); SDL_SetError("Out of memory"); return (NULL); } cursor->w = w; cursor->h = h; cursor->hot_x = hot_x; cursor->hot_y = hot_y; cursor->data = cursor_data; /* Data / Mask Resulting pixel on screen 0 / 1 White 1 / 1 Black 0 / 0 Transparent 1 / 0 Inverted color if possible, black if not. */ ptr = cursor_data; for (i = 0; i < h; ++i) { for (j = 0; j < w / 8; ++j) { data_byte = *data; mask_byte = *mask; *ptr++ = 0; /* Sets whole byte transparent */ *ptr = 0; for (k = 0; k < 8; k++) { (*ptr) <<= 2; if (data_byte & 1) *ptr |= 3; /* Black or inverted */ else if (mask_byte & 1) *ptr |= 1; /* White */ if ((k & 3) == 3) ptr--; data_byte >>= 1; mask_byte >>= 1; } ptr += 3; data++; mask++; } } return (cursor); } int RISCOS_ShowWMCursor(_THIS, WMcursor * cursor) { current_cursor = cursor; if (cursor == NULL) { _kernel_osbyte(106, 0, 0); defined_cursor = NULL; } else { WMcursor *old_cursor = defined_cursor; if (cursor != defined_cursor) { Uint8 cursor_def[10]; cursor_def[0] = 0; cursor_def[1] = 2; /* Use shape number 2 */ cursor_def[2] = cursor->w / 4; /* Width in bytes */ cursor_def[3] = cursor->h; /* Height (h) in pixels */ cursor_def[4] = cursor->hot_x; /* ActiveX in pixels from left */ cursor_def[5] = cursor->hot_y; /* ActiveY in pixels from top */ cursor_def[6] = ((int) (cursor->data) & 0xFF); /* Least significant byte of pointer to data */ cursor_def[7] = ((int) (cursor->data) >> 8) & 0xFF; /* ... */ cursor_def[8] = ((int) (cursor->data) >> 16) & 0xFF; /* ... */ cursor_def[9] = ((int) (cursor->data) >> 24) & 0xFF; /* Most significant byte of pointer to data */ if (_kernel_osword(21, (int *) cursor_def) != 0) { SDL_SetError("RISCOS couldn't create the cursor to show"); return (0); } defined_cursor = cursor; } if (old_cursor == NULL) { /* First time or reshow in window, so save/setup palette */ if (!cursor_palette_saved) { WIMP_SaveCursorPalette(); } WIMP_SetSDLCursorPalette(); } _kernel_osbyte(106, 2, 0); } return (1); } void FULLSCREEN_WarpWMCursor(_THIS, Uint16 x, Uint16 y) { Uint8 move_block[5]; int eig_block[3]; _kernel_swi_regs regs; int os_x, os_y; eig_block[0] = 4; /* X eig factor */ eig_block[1] = 5; /* Y eig factor */ eig_block[2] = -1; /* End of list of variables to request */ regs.r[0] = (int) eig_block; regs.r[1] = (int) eig_block; _kernel_swi(OS_ReadVduVariables, ®s, ®s); os_x = x << eig_block[0]; os_y = y << eig_block[1]; move_block[0] = 3; /* Move cursor */ move_block[1] = os_x & 0xFF; move_block[2] = (os_x >> 8) & 0xFF; move_block[3] = os_y & 0xFF; move_block[4] = (os_y >> 8) & 0xFF; _kernel_osword(21, (int *) move_block); SDL_PrivateMouseMotion(0, 0, x, y); } /* Reshow cursor when mouse re-enters the window */ void WIMP_ReshowCursor(_THIS) { defined_cursor = NULL; cursor_palette_saved = 0; RISCOS_ShowWMCursor(this, current_cursor); } void WIMP_WarpWMCursor(_THIS, Uint16 x, Uint16 y) { _kernel_swi_regs regs; int window_state[9]; char block[5]; int osX, osY; window_state[0] = this->hidden->window_handle; regs.r[1] = (unsigned int) window_state; _kernel_swi(Wimp_GetWindowState, ®s, ®s); osX = (x << this->hidden->xeig) + window_state[1]; osY = window_state[4] - (y << this->hidden->yeig); block[0] = 3; block[1] = osX & 0xFF; block[2] = (osX >> 8) & 0xFF; block[3] = osY & 0xFF; block[4] = (osY >> 8) & 0xFF; regs.r[0] = 21; regs.r[1] = (int) block; _kernel_swi(OS_Word, ®s, ®s); SDL_PrivateMouseMotion(0, 0, x, y); } int WIMP_ShowWMCursor(_THIS, WMcursor * cursor) { if (mouseInWindow) return RISCOS_ShowWMCursor(this, cursor); else current_cursor = cursor; return 1; } SDL_GrabMode RISCOS_GrabInput(_THIS, SDL_GrabMode mode) { /* In fullscreen mode we don't need to do anything */ if (mode < SDL_GRAB_FULLSCREEN) { _kernel_swi_regs regs; unsigned char block[9]; block[0] = 1; /* Define mouse cursor bounding block */ if (mode == SDL_GRAB_OFF) { /* Clip to whole screen */ int r = (this->hidden->screen_width << this->hidden->xeig) - 1; int t = (this->hidden->screen_height << this->hidden->yeig) - 1; block[1] = 0; block[2] = 0; /* Left */ block[3] = 0; block[4] = 0; /* Bottom */ block[5] = r & 0xFF; block[6] = (r >> 8) & 0xFF; /* Right */ block[7] = t & 0xFF; block[8] = (t >> 8) & 0xFF; /* Top */ } else { /* Clip to window */ unsigned char window_state[36]; *((int *) window_state) = this->hidden->window_handle; regs.r[1] = (unsigned int) window_state; _kernel_swi(Wimp_GetWindowState, ®s, ®s); block[1] = window_state[4]; block[2] = window_state[5]; block[3] = window_state[8]; block[4] = window_state[9]; block[5] = window_state[12]; block[6] = window_state[13]; block[7] = window_state[16]; block[8] = window_state[17]; } regs.r[0] = 21; /* OS word code */ regs.r[1] = (int) block; _kernel_swi(OS_Word, ®s, ®s); } return mode; } /* Save mouse cursor palette to be restore when we are no longer defining a cursor */ void WIMP_SaveCursorPalette() { _kernel_swi_regs regs; int colour; for (colour = 0; colour < 2; colour++) { regs.r[0] = (int) wimp_cursor_palette[colour][0]; regs.r[1] = 25; /* Read settings with OS_ReadPalette */ if (_kernel_swi(0x2f, ®s, ®s) == NULL) { wimp_cursor_palette[colour][2] = (unsigned char) ((regs.r[2] >> 8) & 0xFF); wimp_cursor_palette[colour][3] = (unsigned char) ((regs.r[2] >> 16) & 0xFF); wimp_cursor_palette[colour][4] = (unsigned char) ((regs.r[2] >> 24) & 0xFF); } } cursor_palette_saved = 1; } /* Restore the WIMP's cursor when we leave the SDL window */ void WIMP_RestoreWimpCursor() { int colour; /* Reset to pointer shape 1 */ _kernel_osbyte(106, 1, 0); /* Reset pointer colours */ if (cursor_palette_saved) { for (colour = 0; colour < 2; colour++) { _kernel_osword(12, (int *) wimp_cursor_palette[colour]); } } cursor_palette_saved = 0; } /* Set palette used for SDL mouse cursors */ void WIMP_SetSDLCursorPalette() { /* First time set up the mouse colours */ Uint8 block[5]; /* Set up colour 1 as white */ block[0] = 1; /* Colour to change 1 - 3 */ block[1] = 25; /* Set pointer colour */ block[2] = 255; /* red component */ block[3] = 255; /* green component */ block[4] = 255; /* blue component */ _kernel_osword(12, (int *) block); /* Set colour 3 to back */ block[0] = 3; /* Colour to change 1 - 3 */ block[1] = 25; /* Set pointer colour */ block[2] = 0; /* red component */ block[3] = 0; /* green component */ block[4] = 0; /* blue component */ _kernel_osword(12, (int *) block); } /* vi: set ts=4 sw=4 expandtab: */