diff options
Diffstat (limited to 'distrib/sdl-1.2.15/src/video/riscos/SDL_wimpvideo.c')
| -rw-r--r-- | distrib/sdl-1.2.15/src/video/riscos/SDL_wimpvideo.c | 501 |
1 files changed, 501 insertions, 0 deletions
diff --git a/distrib/sdl-1.2.15/src/video/riscos/SDL_wimpvideo.c b/distrib/sdl-1.2.15/src/video/riscos/SDL_wimpvideo.c new file mode 100644 index 0000000..0f9c545 --- /dev/null +++ b/distrib/sdl-1.2.15/src/video/riscos/SDL_wimpvideo.c @@ -0,0 +1,501 @@ +/* + SDL - Simple DirectMedia Layer + Copyright (C) 1997-2012 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 RISC OS Wimp display. +*/ + +#include "SDL_video.h" +#include "SDL_mouse.h" +#include "../SDL_sysvideo.h" +#include "../SDL_pixels_c.h" +#include "../../events/SDL_events_c.h" + +#include "SDL_riscostask.h" +#include "SDL_riscosvideo.h" +#include "SDL_riscosevents_c.h" +#include "SDL_riscosmouse_c.h" + +#include "kernel.h" +#include "swis.h" + +/* Initialization/Query functions */ +SDL_Rect **WIMP_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags); +SDL_Surface *WIMP_SetVideoMode(_THIS, SDL_Surface *current, int width, int height, int bpp, Uint32 flags); +int WIMP_SetColors(_THIS, int firstcolor, int ncolors, SDL_Color *colors); +void WIMP_SetWMCaption(_THIS, const char *title, const char *icon); + + +extern unsigned char *WIMP_CreateBuffer(int width, int height, int bpp); +extern void WIMP_PumpEvents(_THIS); +extern void WIMP_PlotSprite(_THIS, int x, int y); +extern void WIMP_SetupPlotInfo(_THIS); +extern void WIMP_SetFocus(int win); + +/* etc. */ +static void WIMP_UpdateRects(_THIS, int numrects, SDL_Rect *rects); + +/* RISC OS Wimp handling helpers */ +void WIMP_ReadModeInfo(_THIS); +unsigned int WIMP_SetupWindow(_THIS, SDL_Surface *surface); +void WIMP_SetDeviceMode(_THIS); +void WIMP_DeleteWindow(_THIS); + +/* FULLSCREEN function required for wimp/fullscreen toggling */ +extern int FULLSCREEN_SetMode(int width, int height, int bpp); + +/* Currently need to set this up here as it only works if you + start up in a Wimp mode */ +extern int RISCOS_ToggleFullScreen(_THIS, int fullscreen); + +extern int riscos_backbuffer; +extern int mouseInWindow; +extern int riscos_closeaction; + +/* Following needed to ensure window is shown immediately */ +extern int hasFocus; +extern void WIMP_Poll(_THIS, int waitTime); + +SDL_Surface *WIMP_SetVideoMode(_THIS, SDL_Surface *current, + int width, int height, int bpp, Uint32 flags) +{ + Uint32 Rmask = 0; + Uint32 Gmask = 0; + Uint32 Bmask = 0; + char *buffer = NULL; + int bytesPerPixel = 1; + + /* Don't support double buffering in Wimp mode */ + flags &= ~SDL_DOUBLEBUF; + flags &= ~SDL_HWSURFACE; + + switch(bpp) + { + case 8: + /* Emulated palette using ColourTrans */ + flags |= SDL_HWPALETTE; + break; + + case 15: + case 16: + Bmask = 0x00007c00; + Gmask = 0x000003e0; + Rmask = 0x0000001f; + bytesPerPixel = 2; + break; + + case 32: + Bmask = 0x00ff0000; + Gmask = 0x0000ff00; + Rmask = 0x000000ff; + bytesPerPixel = 4; + break; + + default: + SDL_SetError("Pixel depth not supported"); + return NULL; + break; + } + +/* printf("Setting mode %dx%d\n", width, height);*/ + + /* Allocate the new pixel format for the screen */ + if ( ! SDL_ReallocFormat(current, bpp, Rmask, Gmask, Bmask, 0) ) { + SDL_SetError("Couldn't allocate new pixel format for requested mode"); + return(NULL); + } + + /* Set up the new mode framebuffer */ + current->w = width; + this->hidden->height = current->h = height; + + if (bpp == 15) bpp = 16; + buffer = WIMP_CreateBuffer(width, height, bpp); + if (buffer == NULL) + { + SDL_SetError("Couldn't create sprite for video memory"); + return (NULL); + } + + this->hidden->bank[0] = buffer + 60; /* Start of sprite data */ + if (bpp == 8) this->hidden->bank[0] += 2048; /* 8bpp sprite have palette first */ + + this->hidden->bank[1] = buffer; /* Start of buffer */ + + /* Remember sprite buffer so it can be freed later */ + if (this->hidden->alloc_bank) SDL_free(this->hidden->alloc_bank); + this->hidden->alloc_bank = buffer; + + current->pitch = width * bytesPerPixel; + if ((current->pitch & 3)) + { + /* Sprites are 32bit word aligned */ + current->pitch += (4 - (current->pitch & 3)); + } + + current->flags = flags | SDL_PREALLOC; + + WIMP_ReadModeInfo(this); + + SDL_memset(this->hidden->bank[0], 0, height * current->pitch); + + this->hidden->current_bank = 0; + current->pixels = this->hidden->bank[0]; + + + if (WIMP_SetupWindow(this, current) == 0) + { + SDL_SetError("Unable to create window to display surface"); + return NULL; + } + + /* Reset device functions for the wimp */ + WIMP_SetDeviceMode(this); + + /* Needs to set up plot info after window has been created */ + /* Not sure why, but plots don't work if I do it earlier */ + WIMP_SetupPlotInfo(this); + + /* Poll until window is shown */ + { + /* We wait until it gets the focus, but give up after 5 seconds + in case the focus is prevented in any way. + */ + Uint32 now = SDL_GetTicks(); + while (!hasFocus && SDL_GetTicks() - now < 5000) + { + WIMP_Poll(this, 0); + } + } + + /* We're done */ + return(current); +} + + +void WIMP_ReadModeInfo(_THIS) +{ + _kernel_swi_regs regs; + int vars[6]; + int vals[5]; + + vars[0] = 4; /* XEig */ + vars[1] = 5; /* YEig */ + vars[2] = 9; /* Log base 2 bpp */ + vars[3] = 11; /* Screen Width - 1 */ + vars[4] = 12; /* Screen Depth - 1 */ + vars[5] = -1; /* Terminate list */ + + regs.r[0] = (int)vars; + regs.r[1] = (int)vals; + _kernel_swi(OS_ReadVduVariables, ®s, ®s); + this->hidden->xeig = vals[0]; + this->hidden->yeig = vals[1]; + this->hidden->screen_bpp = 1 << vals[2]; + this->hidden->screen_width = vals[3] + 1; + this->hidden->screen_height = vals[4] + 1; +} + +/* Set device function to call the correct versions for running + in a wimp window */ + +void WIMP_SetDeviceMode(_THIS) +{ + if (this->UpdateRects == WIMP_UpdateRects) return; /* Already set up */ + + this->SetColors = WIMP_SetColors; + this->UpdateRects = WIMP_UpdateRects; + + this->FlipHWSurface = NULL; + + this->SetCaption = WIMP_SetWMCaption; + this->SetIcon = NULL; + this->IconifyWindow = NULL; + + this->ShowWMCursor = WIMP_ShowWMCursor; + this->WarpWMCursor = WIMP_WarpWMCursor; + + this->ToggleFullScreen = RISCOS_ToggleFullScreen; + + this->PumpEvents = WIMP_PumpEvents; +} + +/* Setup the Window to display the surface */ +unsigned int WIMP_SetupWindow(_THIS, SDL_Surface *surface) +{ + _kernel_swi_regs regs; + int window_data[23]; + int *window_block = window_data+1; + int x = (this->hidden->screen_width - surface->w) / 2; + int y = (this->hidden->screen_height - surface->h) / 2; + int xeig = this->hidden->xeig; + int yeig = this->hidden->yeig; + + mouseInWindow = 0; + + /* Always delete the window and recreate on a change */ + if (this->hidden->window_handle) WIMP_DeleteWindow(this); + + /* Setup window co-ordinates */ + window_block[0] = x << xeig; + window_block[1] = y << yeig; + window_block[2] = window_block[0] + (surface->w << xeig); + window_block[3] = window_block[1] + (surface->h << yeig); + + + window_block[4] = 0; /* Scroll offsets */ + window_block[5] = 0; + window_block[6] = -1; /* Open on top of window stack */ + + window_block[7] = 0x85040042; /* Window flags */ + if (riscos_closeaction != 0) window_block[7] |= 0x2000000; + + /* TODO: Take into account surface->flags */ + + window_block[8] = 0xff070207; /* Window colours */ + window_block[9] = 0x000c0103; + window_block[10] = 0; /* Work area minimum */ + window_block[11] = -surface->h << yeig; + window_block[12] = surface->w << xeig; /* Work area maximum */ + window_block[13] = 0; + window_block[14] = 0x2700013d; /* Title icon flags */ + window_block[15] = 0x00003000; /* Work area flags - Mouse click down reported */ + window_block[16] = 1; /* Sprite area control block pointer */ + window_block[17] = 0x00100010; /* Minimum window size (width & height) (16x16)*/ + window_block[18] = (int)this->hidden->title; /* Title data */ + window_block[19] = -1; + window_block[20] = 256; + window_block[21] = 0; /* Number of icons */ + + regs.r[1] = (unsigned int)(window_block); + + /* Create the window */ + if (_kernel_swi(Wimp_CreateWindow, ®s, ®s) == NULL) + { + this->hidden->window_handle = window_data[0] = regs.r[0]; + + /* Show the window on the screen */ + regs.r[1] = (unsigned int)window_data; + if (_kernel_swi(Wimp_OpenWindow, ®s, ®s) == NULL) + { + WIMP_SetFocus(this->hidden->window_handle); + } else + { + WIMP_DeleteWindow(this); + } + } + + return this->hidden->window_handle; +} + +/* Destroy the Window */ + +void WIMP_DeleteWindow(_THIS) +{ + _kernel_swi_regs regs; + regs.r[1] = (unsigned int)&(this->hidden->window_handle); + _kernel_swi(Wimp_DeleteWindow, ®s, ®s); + this->hidden->window_handle = 0; +} + + +void WIMP_UpdateRects(_THIS, int numrects, SDL_Rect *rects) +{ + _kernel_swi_regs regs; + int update_block[12]; + int xeig = this->hidden->xeig; + int yeig = this->hidden->yeig; + int j; + update_block[0] = this->hidden->window_handle; + + for (j = 0; j < numrects; j++) + { + update_block[1] = rects[j].x << xeig; /* Min X */ + update_block[4] = -(rects[j].y << yeig); + update_block[3] = update_block[1] + (rects[j].w << xeig); + update_block[2] = update_block[4] - (rects[j].h << yeig); + + regs.r[1] = (int)update_block; + /* Update window can fail if called before first poll */ + if (_kernel_swi(Wimp_UpdateWindow, ®s, ®s) == 0) + { + while (regs.r[0]) + { + WIMP_PlotSprite(this, update_block[1], update_block[2]); + _kernel_swi(Wimp_GetRectangle, ®s, ®s); + } + } + } +} + + +int WIMP_SetColors(_THIS, int firstcolor, int ncolors, SDL_Color *colors) +{ + unsigned int *pal = (unsigned int *)(this->hidden->bank[1]+60); + int j; + SDL_Rect update; + + pal += firstcolor*2; + for (j = 0; j < ncolors; j++) + { + *pal = (((unsigned int)colors->r) << 8) + + (((unsigned int)colors->g) << 16) + + (((unsigned int)colors->b) << 24); + pal[1] = *pal; + pal += 2; + colors++; + } + + WIMP_SetupPlotInfo(this); + + /* Need to refresh the window */ + update.x = 0; + update.y = 0; + update.w = SDL_VideoSurface->w; + update.h = SDL_VideoSurface->h; + WIMP_UpdateRects(this, 1, &update); + + return 1; +} + +void WIMP_SetWMCaption(_THIS, const char *title, const char *icon) +{ + _kernel_swi_regs regs; + + SDL_strlcpy(this->hidden->title, title, SDL_arraysize(this->hidden->title)); + + if (RISCOS_GetWimpVersion() < 380) + { + int block[6]; + + regs.r[1] = (int)block; + _kernel_swi(Wimp_GetCaretPosition, ®s, ®s); + if (block[0] == (int)this->hidden->window_handle) + { + regs.r[0] = -1; + _kernel_swi(Wimp_SetCaretPosition, ®s,®s); + } else + { + regs.r[0] = this->hidden->window_handle; + regs.r[1] = -1; + regs.r[2] = -1; + regs.r[3] = -1; + _kernel_swi(Wimp_SetCaretPosition, ®s,®s); + } + regs.r[0] = block[0]; + regs.r[1] = block[1]; + regs.r[2] = block[2]; + regs.r[3] = block[3]; + regs.r[4] = block[4]; + regs.r[5] = block[5]; + _kernel_swi(Wimp_SetCaretPosition, ®s,®s); + } else + { + regs.r[0] = this->hidden->window_handle; + regs.r[1] = 0x4b534154; /* "TASK" */ + regs.r[2] = 3; /* Redraw title */ + _kernel_swi(Wimp_ForceRedraw, ®s, ®s); + } +} + +void WIMP_RefreshDesktop(_THIS) +{ + int width = this->hidden->screen_width << this->hidden->xeig; + int height = this->hidden->screen_height << this->hidden->yeig; + _kernel_swi_regs regs; + regs.r[0] = -1; /* Whole screen */ + regs.r[1] = 0; + regs.r[2] = 0; + regs.r[3] = width; + regs.r[4] = height; + _kernel_swi(Wimp_ForceRedraw, ®s, ®s); +} + +/* Toggle to window from full screen */ +int WIMP_ToggleFromFullScreen(_THIS) +{ + int width = this->screen->w; + int height = this->screen->h; + int bpp = this->screen->format->BitsPerPixel; + char *buffer = NULL; + char *old_bank[2]; + char *old_alloc_bank; + + /* Ensure flags are OK */ + this->screen->flags &= ~(SDL_DOUBLEBUF|SDL_HWSURFACE); + + if (this->hidden->bank[0] == this->hidden->alloc_bank || riscos_backbuffer == 0) + { + /* Need to create a sprite for the screen and copy the data to it */ + char *data; + buffer = WIMP_CreateBuffer(width, height, bpp); + data = buffer + 60; /* Start of sprite data */ + if (bpp == 8) data += 2048; /* 8bpp sprite have palette first */ + + if (buffer == NULL) return 0; + SDL_memcpy(data, this->hidden->bank[0], width * height * this->screen->format->BytesPerPixel); + } + /* else We've switch to full screen before so we already have a sprite */ + + old_bank[0] = this->hidden->bank[0]; + old_bank[1] = this->hidden->bank[1]; + old_alloc_bank = this->hidden->alloc_bank; + + if (buffer != NULL) this->hidden->alloc_bank = buffer; + + this->hidden->bank[1] = this->hidden->alloc_bank; + this->hidden->bank[0] = this->hidden->bank[1] + 60; /* Start of sprite data */ + if (bpp == 8) this->hidden->bank[0] += 2048; /* 8bpp sprite have palette first */ + + this->hidden->current_bank = 0; + this->screen->pixels = this->hidden->bank[0]; + + RISCOS_RestoreWimpMode(); + WIMP_ReadModeInfo(this); + if (WIMP_SetupWindow(this, this->screen)) + { + WIMP_SetDeviceMode(this); + WIMP_SetupPlotInfo(this); + + if (riscos_backbuffer == 0) riscos_backbuffer = 1; + + if (buffer && old_alloc_bank) SDL_free(old_alloc_bank); + + return 1; + } else + { + /* Drop back to full screen mode on failure */ + this->hidden->bank[0] = old_bank[0]; + this->hidden->bank[1] = old_bank[1]; + this->hidden->alloc_bank = old_alloc_bank; + if (buffer) SDL_free(buffer); + + RISCOS_StoreWimpMode(); + FULLSCREEN_SetMode(width, height, bpp); + } + + return 0; +} |