MeowOS Dev
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136 lines
4.8 KiB
C
136 lines
4.8 KiB
C
/*
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* meow_ui_widget.c — 控件层（B1.3）：按钮/滑条/开关/列表最小集。
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*
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* 控件只负责绘制与状态；命中分发由应用在 on_tap 里调 meow_widget_hit 完成
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* （与 MEOW_APP_SDK.md §5 一致）。绘制读当前主题（meow_theme_get）走 back_buf。
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*/
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#include "meow_ui.h"
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#include "meow_ui_internal.h"
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#include <stdlib.h>
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#include <string.h>
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enum { W_BTN = 0, W_SLIDER = 1, W_SWITCH = 2, W_LIST = 3 };
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struct meow_widget {
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int type;
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int x, y, w, h;
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char label[128];
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int pressed; /* 按钮按下视觉态 */
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int min, max, val; /* 滑条 */
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int on; /* 开关 */
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int count, sel; /* 列表 */
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meow_list_source src;
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void *ctx;
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};
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meow_widget *meow_btn_create(int x, int y, int w, int h, const char *label)
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{
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meow_widget *t = (meow_widget *)calloc(1, sizeof *t);
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if (!t) return NULL;
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t->type = W_BTN; t->x = x; t->y = y; t->w = w; t->h = h;
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if (label) { strncpy(t->label, label, sizeof t->label - 1); t->label[sizeof t->label - 1] = 0; }
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return t;
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}
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meow_widget *meow_slider_create(int x, int y, int w, int min, int max, int val)
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{
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meow_widget *t = (meow_widget *)calloc(1, sizeof *t);
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if (!t) return NULL;
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t->type = W_SLIDER; t->x = x; t->y = y; t->w = w; t->h = 40;
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t->min = min; t->max = (max > min) ? max : min + 1; t->val = (val < min) ? min : (val > t->max) ? t->max : val;
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return t;
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}
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meow_widget *meow_switch_create(int x, int y, int on)
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{
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meow_widget *t = (meow_widget *)calloc(1, sizeof *t);
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if (!t) return NULL;
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t->type = W_SWITCH; t->x = x; t->y = y; t->w = 56; t->h = 32;
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t->on = on ? 1 : 0;
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return t;
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}
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meow_widget *meow_list_create(int x, int y, int w, int h, int count,
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meow_list_source src, void *ctx)
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{
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meow_widget *t = (meow_widget *)calloc(1, sizeof *t);
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if (!t) return NULL;
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t->type = W_LIST; t->x = x; t->y = y; t->w = w; t->h = h;
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t->count = count; t->src = src; t->ctx = ctx; t->sel = 0;
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return t;
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}
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void meow_widget_free(meow_widget *w) { if (w) free(w); }
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static int hit(meow_widget *w, int x, int y)
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{
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if (!w) return 0;
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return x >= w->x && x < w->x + w->w && y >= w->y && y < w->y + w->h;
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}
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int meow_widget_hit(meow_widget *w, int x, int y) { return hit(w, x, y); }
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int meow_btn_pressed(meow_widget *w) { return w && w->type == W_BTN ? w->pressed : 0; }
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void meow_slider_set(meow_widget *w, int val)
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{
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if (!w || w->type != W_SLIDER) return;
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if (val < w->min) val = w->min; if (val > w->max) val = w->max;
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w->val = val;
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}
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int meow_slider_get(meow_widget *w) { return w && w->type == W_SLIDER ? w->val : 0; }
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void meow_switch_set(meow_widget *w, int on)
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{ if (w && w->type == W_SWITCH) w->on = on ? 1 : 0; }
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int meow_switch_get(meow_widget *w) { return w && w->type == W_SWITCH ? w->on : 0; }
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/* 供应用在 on_tap 里对外可控回馈：这里不存命中态（由 app 分发），仅暴露绘制 */
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void meow_widget_draw(meow_widget *w)
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{
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if (!w) return;
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const meow_theme *th = meow_theme_get();
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switch (w->type) {
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case W_BTN: {
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uint32_t bg = w->pressed ? th->dim : th->accent;
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meow_gfx_fill_round(w->x, w->y, w->w, w->h, 10, bg);
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meow_ui_text_center(w->x + w->w / 2, w->y + (w->h - meow_ui_text_height(th->font_body)) / 2,
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w->label, th->font_body, 0xFFFFFF);
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break;
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}
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case W_SLIDER: {
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int trace_y = w->y + w->h / 2 - 3;
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meow_ui_fill_rect(w->x, trace_y, w->w, 6, th->dim);
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int range = w->max - w->min;
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int frac = range ? (w->val - w->min) * w->w / range : 0;
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if (frac > 0) meow_ui_fill_rect(w->x, trace_y, frac, 6, th->accent);
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int tx = w->x + frac;
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int ty = w->y + w->h / 2;
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meow_gfx_fill_round(tx - 10, ty - 10, 20, 20, 10, th->fg);
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break;
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}
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case W_SWITCH: {
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uint32_t bg = w->on ? th->accent : th->dim;
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meow_gfx_fill_round(w->x, w->y, w->w, w->h, w->h / 2, bg);
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int knob_r = w->h / 2 - 3;
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int kx = w->on ? w->x + w->w - knob_r * 2 - 3 : w->x + 3;
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meow_gfx_fill_round(kx, w->y + 3, knob_r * 2, knob_r * 2, knob_r, 0xFFFFFF);
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break;
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}
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case W_LIST: {
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int rowh = 44, pad = 16;
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for (int i = 0; i < w->count; i++) {
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int ry = w->y + i * rowh;
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if (ry >= w->y + w->h) break;
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if (i == w->sel) meow_ui_fill_rect(w->x, ry, w->w, rowh, th->accent);
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char label[64] = "";
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if (w->src && w->src(i, label, (int)sizeof label, w->ctx)) {
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uint32_t col = (i == w->sel) ? 0xFFFFFF : th->fg;
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meow_ui_text(w->x + pad, ry + (rowh - meow_ui_text_height(th->font_body)) / 2,
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label, th->font_body, col);
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}
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meow_ui_fill_rect(w->x, ry + rowh - 1, w->w, 1, th->dim);
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}
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break;
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}
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default: break;
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}
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}
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