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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,142 @@ | ||
| /* sheet */ | ||
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| #include "bootpack.h" | ||
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| #define SHEET_USE 1 | ||
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| struct SHTCTL *shtctl_init(struct MEMMAN *memman, unsigned char *vram, int xsize, int ysize) | ||
| { | ||
| struct SHTCTL *ctl; | ||
| int i; | ||
| ctl = (struct SHTCTL *) memman_alloc_4k(memman, sizeof (struct SHTCTL)); | ||
| if (ctl == 0) { | ||
| goto err; | ||
| } | ||
| ctl->vram = vram; | ||
| ctl->xsize = xsize; | ||
| ctl->ysize = ysize; | ||
| ctl->top = -1; /* �V�[�g�͈ꖇ���Ȃ� */ | ||
| for (i = 0; i < MAX_SHEETS; i++) { | ||
| ctl->sheets0[i].flags = 0; /* 标记为未使用 */ | ||
| } | ||
| err: | ||
| return ctl; | ||
| } | ||
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| struct SHEET *sheet_alloc(struct SHTCTL *ctl) | ||
| { | ||
| struct SHEET *sht; | ||
| int i; | ||
| for (i = 0; i < MAX_SHEETS; i++) { | ||
| if (ctl->sheets0[i].flags == 0) { | ||
| sht = &ctl->sheets0[i]; | ||
| sht->flags = SHEET_USE; /* 标记为正在使用*/ | ||
| sht->height = -1; /* 隐藏 */ | ||
| return sht; | ||
| } | ||
| } | ||
| return 0; /* 所有的SHEET都处于正在使用状态*/ | ||
| } | ||
|
|
||
| void sheet_setbuf(struct SHEET *sht, unsigned char *buf, int xsize, int ysize, int col_inv) | ||
| { | ||
| sht->buf = buf; | ||
| sht->bxsize = xsize; | ||
| sht->bysize = ysize; | ||
| sht->col_inv = col_inv; | ||
| return; | ||
| } | ||
|
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| void sheet_updown(struct SHTCTL *ctl, struct SHEET *sht, int height) | ||
| { | ||
| int h, old = sht->height; /* 存储设置前的高度信息 */ | ||
| if (height > ctl->top + 1) { | ||
| height = ctl->top + 1; | ||
| } | ||
| if (height < -1) { | ||
| height = -1; | ||
| } | ||
| sht->height = height;/* 设定高度 */ | ||
|
|
||
| /* 下面主要是进行sheets[ ]的重新排列 */ | ||
| if (old > height) { /* 比以前低 */ | ||
| if (height >= 0) { | ||
| /* 把中间的往上提 */ | ||
| for (h = old; h > height; h--) { | ||
| ctl->sheets[h] = ctl->sheets[h - 1]; | ||
| ctl->sheets[h]->height = h; | ||
| } | ||
| ctl->sheets[height] = sht; | ||
| } else { /* 隐藏 */ | ||
| if (ctl->top > old) { | ||
| /* 把上面的降下来 */ | ||
| for (h = old; h < ctl->top; h++) { | ||
| ctl->sheets[h] = ctl->sheets[h + 1]; | ||
| ctl->sheets[h]->height = h; | ||
| } | ||
| } | ||
| ctl->top--; /* 由于显示中的图层减少了一个，所以最上面的图层高度下降 */ | ||
| } | ||
| sheet_refresh(ctl); /* 按新图层的信息重新绘制画面 */ | ||
| } else if (old < height) { /* 比以前高 */ | ||
| if (old >= 0) { | ||
| /* 把中间的拉下去 */ | ||
| for (h = old; h < height; h++) { | ||
| ctl->sheets[h] = ctl->sheets[h + 1]; | ||
| ctl->sheets[h]->height = h; | ||
| } | ||
| ctl->sheets[height] = sht; | ||
| } else { /* 由隐藏状态转为显示状态 */ | ||
| /* 将已在上面的提上来 */ | ||
| for (h = ctl->top; h >= height; h--) { | ||
| ctl->sheets[h + 1] = ctl->sheets[h]; | ||
| ctl->sheets[h + 1]->height = h + 1; | ||
| } | ||
| ctl->sheets[height] = sht; | ||
| ctl->top++; /* 由于已显示的图层增加了1个，所以最上面的图层高度增加 */ | ||
| } | ||
| sheet_refresh(ctl); /* 按新图层信息重新绘制画面 */ | ||
| } | ||
| return; | ||
| } | ||
|
|
||
| void sheet_refresh(struct SHTCTL *ctl) | ||
| { | ||
| int h, bx, by, vx, vy; | ||
| unsigned char *buf, c, *vram = ctl->vram; | ||
| struct SHEET *sht; | ||
| for (h = 0; h <= ctl->top; h++) { | ||
| sht = ctl->sheets[h]; | ||
| buf = sht->buf; | ||
| for (by = 0; by < sht->bysize; by++) { | ||
| vy = sht->vy0 + by; | ||
| for (bx = 0; bx < sht->bxsize; bx++) { | ||
| vx = sht->vx0 + bx; | ||
| c = buf[by * sht->bxsize + bx]; | ||
| if (c != sht->col_inv) { | ||
| vram[vy * ctl->xsize + vx] = c; | ||
| } | ||
| } | ||
| } | ||
| } | ||
| return; | ||
| } | ||
|
|
||
| void sheet_slide(struct SHTCTL *ctl, struct SHEET *sht, int vx0, int vy0) | ||
| { | ||
| sht->vx0 = vx0; | ||
| sht->vy0 = vy0; | ||
| if (sht->height >= 0) { /* 如果正在显示*/ | ||
| sheet_refresh(ctl); /* 按新图层的信息刷新画面 */ | ||
| } | ||
| return; | ||
| } | ||
|
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| void sheet_free(struct SHTCTL *ctl, struct SHEET *sht) | ||
| { | ||
| if (sht->height >= 0) { | ||
| sheet_updown(ctl, sht, -1); /* 如果处于显示状态，则先设定为隐藏 */ | ||
| } | ||
| sht->flags = 0; /* "未使用"标志 */ | ||
| return; | ||
| } |