| /* |
| 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; |
| } |