266 lines
7.0 KiB
C
266 lines
7.0 KiB
C
#include <stdio.h>
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#include "memory.h"
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#include "sheet.h"
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struct Shtctl *shtctl_init(struct MemMan *memman, unsigned char *vram,
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int xsize, int ysize) {
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struct Shtctl *ctl =
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(struct Shtctl *)memman_alloc_4k(memman, sizeof(struct Shtctl));
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if (!ctl) {
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return NULL;
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}
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ctl->map = (unsigned char *)memman_alloc_4k(memman, xsize * ysize);
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if (!ctl->map) {
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memman_free_4k(memman, (int)ctl, sizeof(struct Shtctl));
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return NULL;
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}
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ctl->vram = vram;
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ctl->xsize = xsize;
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ctl->ysize = ysize;
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ctl->top = -1; // 没有Sheet
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for (int i = 0; i < MAX_SHEETS; i++) {
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ctl->sheets0[i].flags = 0; // 标记为未使用
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ctl->sheets0[i].ctl = ctl; // 记录所属
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}
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return ctl;
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}
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struct Sheet *sheet_alloc(struct Shtctl *ctl) {
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struct Sheet *sht;
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for (int i = 0; i < MAX_SHEETS; i++) {
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if (ctl->sheets0[i].flags == 0) {
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sht = &ctl->sheets0[i];
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sht->flags = SHEET_USE; // 标记为正在使用
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sht->height = -1; // 隐藏
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return sht;
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}
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}
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return NULL;
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}
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void sheet_setbuf(struct Sheet *sht, unsigned char *buf, int xsize, int ysize,
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int col_inv) {
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sht->buf = buf;
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sht->bxsize = xsize;
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sht->bysize = ysize;
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sht->col_inv = col_inv;
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}
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void sheet_updown(struct Sheet *sht, int height) {
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struct Shtctl *ctl = sht->ctl;
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int h, old = sht->height; // 记录设置前的高度
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// 如果指定的高度过高或过低，则进行修正
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if (height > ctl->top + 1) {
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height = ctl->top + 1;
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}
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if (height < -1) {
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height = -1;
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}
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sht->height = height; // 设定高度
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// 下面主要是进行sheets[]的重新排列
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if (old > height) {
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// 比以前低
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if (height >= 0) {
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// 把中间的往上提
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for (h = old; h > height; h--) {
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ctl->sheets[h] = ctl->sheets[h - 1];
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ctl->sheets[h]->height = h;
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}
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ctl->sheets[height] = sht;
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sheet_refreshmap(ctl, sht->vx0, sht->vy0, sht->vx0 + sht->bxsize,
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sht->vy0 + sht->bysize, height + 1);
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sheet_refreshsub(ctl, sht->vx0, sht->vy0, sht->vx0 + sht->bxsize,
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sht->vy0 + sht->bysize, height + 1, old);
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} else {
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// 隐藏
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if (ctl->top > old) {
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// 把上面的降下来
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for (h = old; h < ctl->top; h++) {
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ctl->sheets[h] = ctl->sheets[h + 1];
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ctl->sheets[h]->height = h;
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}
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}
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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
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sheet_refreshmap(ctl, sht->vx0, sht->vy0, sht->vx0 + sht->bxsize,
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sht->vy0 + sht->bysize, 0);
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sheet_refreshsub(ctl, sht->vx0, sht->vy0, sht->vx0 + sht->bxsize,
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sht->vy0 + sht->bysize, 0, old - 1);
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}
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} else if (old < height) {
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// 比以前高
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if (old >= 0) {
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// 把中间的拉下去
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for (h = old; h < height; h++) {
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ctl->sheets[h] = ctl->sheets[h + 1];
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ctl->sheets[h]->height = h;
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}
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ctl->sheets[height] = sht;
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} else {
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// 由隐藏状态转为显示状态
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// 将已在上面的提上来
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for (h = ctl->top; h >= height; h--) {
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ctl->sheets[h + 1] = ctl->sheets[h];
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ctl->sheets[h + 1]->height = h + 1;
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}
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ctl->sheets[height] = sht;
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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
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}
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sheet_refreshmap(ctl, sht->vx0, sht->vy0, sht->vx0 + sht->bxsize,
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sht->vy0 + sht->bysize, height);
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sheet_refreshsub(ctl, sht->vx0, sht->vy0, sht->vx0 + sht->bxsize,
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sht->vy0 + sht->bysize, height, height);
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}
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}
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void sheet_refreshmap(struct Shtctl *ctl, int vx0, int vy0, int vx1, int vy1,
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int h0) {
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unsigned char *map = ctl->map;
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if (vx0 < 0) {
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vx0 = 0;
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}
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if (vy0 < 0) {
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vy0 = 0;
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}
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if (vx1 > ctl->xsize) {
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vx1 = ctl->xsize;
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}
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if (vy1 > ctl->ysize) {
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vy1 = ctl->ysize;
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}
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for (int h = h0; h <= ctl->top; h++) {
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struct Sheet *sht = ctl->sheets[h];
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unsigned char sid = sht - ctl->sheets0;
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unsigned char *buf = sht->buf;
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int bx0 = vx0 - sht->vx0;
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int by0 = vy0 - sht->vy0;
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int bx1 = vx1 - sht->vx0;
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int by1 = vy1 - sht->vy0;
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if (bx0 < 0) {
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bx0 = 0;
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}
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if (by0 < 0) {
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by0 = 0;
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}
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if (bx1 > sht->bxsize) {
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bx1 = sht->bxsize;
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}
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if (by1 > sht->bysize) {
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by1 = sht->bysize;
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}
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for (int by = by0; by < by1; by++) {
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int vy = sht->vy0 + by;
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for (int bx = bx0; bx < bx1; bx++) {
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int vx = sht->vx0 + bx;
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if (buf[by * sht->bxsize + bx] != sht->col_inv) {
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map[vy * ctl->xsize + vx] = sid;
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}
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}
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}
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}
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}
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void sheet_refreshsub(struct Shtctl *ctl, int vx0, int vy0, int vx1, int vy1,
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int h0, int h1) {
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unsigned char *buf, *vram = ctl->vram, *map = ctl->map;
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struct Sheet *sht;
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if (vx0 < 0) {
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vx0 = 0;
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}
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if (vy0 < 0) {
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vy0 = 0;
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}
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if (vx1 > ctl->xsize) {
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vx1 = ctl->xsize;
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}
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if (vy1 > ctl->ysize) {
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vy1 = ctl->ysize;
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}
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for (int h = h0; h <= h1; h++) {
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sht = ctl->sheets[h];
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buf = sht->buf;
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unsigned char sid = sht - ctl->sheets0;
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// 使用vx0 ~ vy1，对bx0 ~ by1进行倒推
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int bx0 = vx0 - sht->vx0;
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int by0 = vy0 - sht->vy0;
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int bx1 = vx1 - sht->vx0;
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int by1 = vy1 - sht->vy0;
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if (bx0 < 0) {
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bx0 = 0;
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}
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if (by0 < 0) {
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by0 = 0;
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}
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if (bx1 > sht->bxsize) {
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bx1 = sht->bxsize;
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}
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if (by1 > sht->bysize) {
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by1 = sht->bysize;
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}
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for (int by = by0; by < by1; by++) {
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int vy = sht->vy0 + by;
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for (int bx = bx0; bx < bx1; bx++) {
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int vx = sht->vx0 + bx;
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if (map[vy * ctl->xsize + vx] == sid) {
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vram[vy * ctl->xsize + vx] = buf[by * sht->bxsize + bx];
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}
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}
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}
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}
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}
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void sheet_refresh(struct Sheet *sht, int bx0, int by0, int bx1, int by1) {
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if (sht->height >= 0) {
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// 如果正在显示，则按新图层的信息刷新画面
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sheet_refreshsub(sht->ctl, sht->vx0 + bx0, sht->vy0 + by0, sht->vx0 + bx1,
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sht->vy0 + by1, sht->height, sht->height);
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}
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}
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void sheet_slide(struct Sheet *sht, int vx0, int vy0) {
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struct Shtctl *ctl = sht->ctl;
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int old_vx0 = sht->vx0, old_vy0 = sht->vy0;
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sht->vx0 = vx0;
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sht->vy0 = vy0;
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if (sht->height >= 0) {
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// 如果正在显示，则按新图层的信息刷新画面
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sheet_refreshmap(ctl, old_vx0, old_vy0, old_vx0 + sht->bxsize,
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old_vy0 + sht->bysize, 0);
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sheet_refreshmap(ctl, vx0, vy0, vx0 + sht->bxsize, vy0 + sht->bysize,
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sht->height);
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sheet_refreshsub(ctl, old_vx0, old_vy0, old_vx0 + sht->bxsize,
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old_vy0 + sht->bysize, 0, sht->height - 1);
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sheet_refreshsub(ctl, vx0, vy0, vx0 + sht->bxsize, vy0 + sht->bysize,
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sht->height, sht->height);
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}
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}
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void sheet_free(struct Sheet *sht) {
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if (sht->height >= 0) {
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sheet_updown(sht, -1); // 如果处于显示状态，则先设定为隐藏
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}
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sht->flags = 0; // 未使用标志
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}
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