mirror of
https://github.com/ekeeke/Genesis-Plus-GX.git
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270 lines
7.2 KiB
C
270 lines
7.2 KiB
C
/*****************************************************************************
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* font.c
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*
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* IPL FONT Engine, using GX hardware
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*
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* Softdev (2006)
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* Eke-Eke (2007,2008,2009)
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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********************************************************************************/
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#include "shared.h"
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#include "font.h"
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#include "gui.h"
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int font_size[256], fheight;
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#ifndef HW_RVL
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/* disable Qoob Modchip before IPL access (emukiddid) */
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static void ipl_set_config(unsigned char c)
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{
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volatile unsigned long* exi = (volatile unsigned long*)0xCC006800;
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unsigned long val,addr;
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addr=0xc0000000;
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val = c << 24;
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exi[0] = ((((exi[0]) & 0x405) | 256) | 48); //select IPL
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//write addr of IPL
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exi[0 * 5 + 4] = addr;
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exi[0 * 5 + 3] = ((4 - 1) << 4) | (1 << 2) | 1;
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while (exi[0 * 5 + 3] & 1);
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//write the ipl we want to send
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exi[0 * 5 + 4] = val;
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exi[0 * 5 + 3] = ((4 - 1) << 4) | (1 << 2) | 1;
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while (exi[0 * 5 + 3] & 1);
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exi[0] &= 0x405; //deselect IPL
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}
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#endif
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static sys_fontheader *fontHeader;
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static u8 *fontTexture;
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int FONT_Init(void)
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{
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#ifndef HW_RVL
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/* disable Qoob before accessing IPL */
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ipl_set_config(6);
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#endif
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/* initialize IPL font */
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fontHeader = memalign(32,sizeof(sys_fontheader));
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if (!fontHeader) return 0;
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SYS_InitFont(&fontHeader);
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/* character width table */
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int i,c;
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for (i=0; i<256; ++i)
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{
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if ((i < fontHeader->first_char) || (i > fontHeader->last_char)) c = fontHeader->inval_char;
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else c = i - fontHeader->first_char;
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font_size[i] = ((unsigned char*)fontHeader)[fontHeader->width_table + c];
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}
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/* default font height */
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fheight = fontHeader->cell_height;
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/* initialize texture data */
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fontTexture = memalign(32, fontHeader->cell_width * fontHeader->cell_height / 2);
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if (!fontTexture)
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{
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free(fontHeader);
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return 0;
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}
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return 1;
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}
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void FONT_Shutdown(void)
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{
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if (fontHeader) free(fontHeader);
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if (fontTexture) free(fontTexture);
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}
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static void DrawChar(unsigned char c, int xpos, int ypos, int size, GXColor color)
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{
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s32 width;
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/* reintialize texture object */
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GXTexObj texobj;
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GX_InitTexObj(&texobj, fontTexture, fontHeader->cell_width, fontHeader->cell_height, GX_TF_I4, GX_CLAMP, GX_CLAMP, GX_FALSE);
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GX_LoadTexObj(&texobj, GX_TEXMAP0);
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/* reinitialize font texture data */
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memset(fontTexture,0,fontHeader->cell_width * fontHeader->cell_height / 2);
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SYS_GetFontTexel(c,fontTexture,0,fontHeader->cell_width/2,&width);
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DCFlushRange(fontTexture, fontHeader->cell_width * fontHeader->cell_height / 2);
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GX_InvalidateTexAll();
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/* adjust texture width */
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width = (fontHeader->cell_width * size) / fontHeader->cell_height;
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/* GX rendering */
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GX_Begin(GX_QUADS, GX_VTXFMT0, 4);
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GX_Position2s16(xpos, ypos - size);
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GX_Color4u8(color.r, color.g, color.b, 0xff);
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GX_TexCoord2f32(0.0, 0.0);
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GX_Position2s16(xpos + width, ypos - size);
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GX_Color4u8(color.r, color.g, color.b, 0xff);
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GX_TexCoord2f32(1.0, 0.0);
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GX_Position2s16(xpos + width, ypos);
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GX_Color4u8(color.r, color.g, color.b, 0xff);
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GX_TexCoord2f32(1.0, 1.0);
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GX_Position2s16(xpos, ypos);
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GX_Color4u8(color.r, color.g, color.b, 0xff);
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GX_TexCoord2f32(0.0, 1.0);
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GX_End ();
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GX_DrawDone();
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}
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void write_font(int x, int y, char *string)
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{
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int ox = x;
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while (*string && (x < (ox + 640)))
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{
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DrawChar(*string, x -(vmode->fbWidth/2), y-(vmode->efbHeight/2),fontHeader->cell_height,(GXColor)WHITE);
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x += font_size[(u8)*string];
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string++;
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}
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}
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void WriteCentre( int y, char *string)
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{
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int x, t;
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for (x=t=0; t<strlen(string); t++) x += font_size[(u8)string[t]];
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if (x>640) x=640;
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x = (640 - x) >> 1;
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write_font(x, y, string);
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}
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void WriteCentre_HL( int y, char *string)
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{
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gx_texture *texture = gxTextureOpenPNG(Overlay_bar_png,0);
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if (texture)
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{
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gxDrawTexture(texture, 0, y-fheight, 640, fheight,240);
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if (texture->data) free(texture->data);
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free(texture);
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}
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WriteCentre(y, string);
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}
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int FONT_write(char *string, int size, int x, int y, int max_width, GXColor color)
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{
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x -= (vmode->fbWidth / 2);
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y -= (vmode->efbHeight / 2);
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int w, ox = x;
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while (*string)
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{
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w = (font_size[(u8)*string] * size) / fheight;
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if ((x + w) <= (ox + max_width))
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{
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DrawChar(*string, x, y, size,color);
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x += w;
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string++;
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}
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else return 1;
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}
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return 0;
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}
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void FONT_writeCenter(char *string, int size, int x1, int x2, int y, GXColor color)
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{
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int i=0;
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u16 width = 0;
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while (string[i] && (string[i] != '\n'))
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width += (font_size[(u8)string[i++]] * size) / fheight;
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int x = x1 + (x2 - x1 - width - vmode->fbWidth) / 2;
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y -= (vmode->efbHeight / 2);
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while (*string && (*string != '\n'))
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{
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DrawChar(*string, x, y, size,color);
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x += (font_size[(u8)*string++] * size) / fheight;
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}
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if (*string == '\n')
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{
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string++;
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i = 0;
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width = 0;
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while (string[i])
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width += (font_size[(u8)string[i++]] * size) / fheight;
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x = x1 + (x2 - x1 - width - vmode->fbWidth) / 2;
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y += size;
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while (*string)
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{
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DrawChar(*string, x, y, size,color);
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x += (font_size[(u8)*string++] * size) / fheight;
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}
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}
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}
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void FONT_alignRight(char *string, int size, int x, int y, GXColor color)
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{
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int i;
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u16 width = 0;
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for (i=0; i<strlen(string); i++)
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width += (font_size[(u8)string[i]] * size) / fheight;
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x -= (vmode->fbWidth / 2) + width;
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y -= (vmode->efbHeight / 2);
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while (*string)
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{
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DrawChar(*string, x, y, size,color);
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x += (font_size[(u8)*string++] * size) / fheight;
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}
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}
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/****************************************************************************
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* Draw functions (FrameBuffer)
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*
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****************************************************************************/
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void fntDrawHLine (int x1, int x2, int y, int color)
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{
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int i;
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y = 320 * y;
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x1 >>= 1;
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x2 >>= 1;
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for (i = x1; i <= x2; i++) xfb[whichfb][y + i] = color;
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}
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void fntDrawVLine (int x, int y1, int y2, int color)
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{
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int i;
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x >>= 1;
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for (i = y1; i <= y2; i++) xfb[whichfb][x + (640 * i) / 2] = color;
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}
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void fntDrawBox (int x1, int y1, int x2, int y2, int color)
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{
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fntDrawHLine (x1, x2, y1, color);
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fntDrawHLine (x1, x2, y2, color);
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fntDrawVLine (x1, y1, y2, color);
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fntDrawVLine (x2, y1, y2, color);
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}
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void fntDrawBoxFilled (int x1, int y1, int x2, int y2, int color)
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{
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int h;
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for (h = y1; h <= y2; h++) fntDrawHLine (x1, x2, h, color);
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}
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