mirror of
https://github.com/kichikuou/xsystem35-sdl2.git
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118 lines
3.3 KiB
C
118 lines
3.3 KiB
C
/*
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* drawtext.c DLL用に surface 上に文字を描く
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*
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* Copyright (C) 1997-1998 Masaki Chikama (Wren) <chikama@kasumi.ipl.mech.nagoya-u.ac.jp>
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* 1998- <masaki-c@is.aist-nara.ac.jp>
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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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/* $Id: drawtext.c,v 1.2 2003/07/21 23:06:47 chikama Exp $ */
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#include "config.h"
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#include <stdio.h>
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#include "portab.h"
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#include "system.h"
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#include "nact.h"
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#include "ags.h"
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#include "font.h"
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#include "surface.h"
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#include "ngraph.h"
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static int ftype; // フォントの種類
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static int fsize; // フォントの大きさ
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/**
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* 次に描く文字のフォントの種類と大きさを設定
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*
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* @param type: フォント種類 (FONT_MINCHO, FONT_GOTHIC)
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* @param size: フォントサイズ
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*/
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int dt_setfont(int type, int size) {
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#ifdef __EMSCRIPTEN__
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if (type == FONT_MINCHO) {
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if (load_mincho_font() != OK)
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type = FONT_GOTHIC;
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}
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#endif
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ftype = type;
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fsize = size;
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return OK;
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}
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/**
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* surface にモノクロ文字を描画。アンチエイリアスされており256階調
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* 書き出すsurfaceは8ビットである必要あり
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*
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* @param sf: 描画する surface
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* @param x: 描画位置Ｘ座標
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* @param y: 描画位置Ｙ座標
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* @param buf: 描画文字列 (SJIS)
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* @return: 実際に描画した幅
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*/
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int dt_drawtext(surface_t *sf, int x, int y, char *buf) {
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int sx, sy, sw, sh;
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ags_setFont(ftype, fsize);
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agsurface_t *glyph = ags_drawStringToSurface(buf);
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if (glyph == NULL) return 0;
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sx = x; sy = y;
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sw = glyph->width;
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sh = glyph->height;
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if (!gr_clip_xywh(sf, &sx, &sy, &sw, &sh)) return 0;
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gr_copy(sf, sx, sy, glyph, 0, 0, sw, sh);
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return sw;
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}
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/**
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* surface にカラー文字を描画。alphamap に256階調のアンチエイリアスされた
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* 文字を描き、pixelmap には、色情報を矩形で描く
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*
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* @param sf: 描画する surface
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* @param x: 描画位置Ｘ座標
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* @param y: 描画位置Ｙ座標
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* @param buf: 描画文字列(SJIS)
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* @param r: 文字色赤
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* @param g: 文字色緑
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* @param b: 文字色青
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* @return: 実際に描画した幅
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*/
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int dt_drawtext_col(surface_t *sf, int x, int y, char *buf, int r, int g, int b) {
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int sx, sy, sw, sh;
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ags_setFont(ftype, fsize);
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agsurface_t *glyph = ags_drawStringToSurface(buf);
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if (glyph == NULL) return 0;
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sx = x; sy = y;
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sw = glyph->width;
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sh = glyph->height;
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if (!gr_clip_xywh(sf, &sx, &sy, &sw, &sh)) return 0;
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// alpha map に文字そのものを描く
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gr_draw_amap(sf, sx, sy, glyph->pixel, sw, sh, glyph->bytes_per_line);
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// pixel map には色情報を矩形で描く
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gr_fill(sf, sx, sy, sw, sh, r, g, b);
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return sw;
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}
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