866 lines
28 KiB
C
866 lines
28 KiB
C
#ifndef NK_RAW_WAYLAND_H_
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#define NK_RAW_WAYLAND_H_
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#define WIDTH 800
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#define HEIGHT 600
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#ifndef MIN
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#define MIN(a,b) ((a) < (b) ? (a) : (b))
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#endif
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#ifndef MAX
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#define MAX(a,b) ((a) < (b) ? (b) : (a))
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#endif
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typedef enum wayland_pixel_layout {
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PIXEL_LAYOUT_XRGB_8888,
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PIXEL_LAYOUT_RGBX_8888,
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} wayland_pl;
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struct wayland_img {
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void *pixels;
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int w, h, pitch;
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wayland_pl pl;
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enum nk_font_atlas_format format;
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};
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struct nk_wayland{
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/*wayland vars*/
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struct wl_display *display;
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struct wl_compositor *compositor;
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struct xdg_wm_base *xdg_wm_base;
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struct wl_shm *wl_shm;
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struct wl_seat* seat;
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struct wl_callback *frame_callback;
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struct wl_surface *surface;
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struct xdg_surface *xdg_surface;
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struct xdg_toplevel *xdg_toplevel;
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struct wl_buffer *front_buffer;
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/*nuklear vars*/
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struct nk_context ctx;
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struct nk_rect scissors;
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struct nk_font_atlas atlas;
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struct wayland_img font_tex;
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int32_t width, height;
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int32_t *data;
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int mouse_pointer_x;
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int mouse_pointer_y;
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uint8_t tex_scratch[512 * 512];
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};
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static uint32_t nk_color_to_xrgb8888(struct nk_color col)
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{
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return (col.a << 24) + (col.r << 16) + (col.g << 8) + col.b;
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}
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static struct nk_color nk_wayland_int2color(const unsigned int i, wayland_pl pl)
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{
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struct nk_color col = {0,0,0,0};
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switch (pl) {
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case PIXEL_LAYOUT_RGBX_8888:
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col.r = (i >> 24) & 0xff;
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col.g = (i >> 16) & 0xff;
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col.b = (i >> 8) & 0xff;
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col.a = i & 0xff;
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break;
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case PIXEL_LAYOUT_XRGB_8888:
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col.a = (i >> 24) & 0xff;
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col.r = (i >> 16) & 0xff;
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col.g = (i >> 8) & 0xff;
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col.b = i & 0xff;
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break;
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default:
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perror("nk_rawfb_int2color(): Unsupported pixel layout.\n");
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break;
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}
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return col;
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}
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static unsigned int nk_wayland_color2int(const struct nk_color c, wayland_pl pl)
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{
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unsigned int res = 0;
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switch (pl) {
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case PIXEL_LAYOUT_RGBX_8888:
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res |= c.r << 24;
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res |= c.g << 16;
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res |= c.b << 8;
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res |= c.a;
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break;
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case PIXEL_LAYOUT_XRGB_8888:
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res |= c.a << 24;
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res |= c.r << 16;
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res |= c.g << 8;
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res |= c.b;
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break;
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default:
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perror("nk_rawfb_color2int(): Unsupported pixel layout.\n");
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break;
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}
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return (res);
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}
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static void nk_wayland_ctx_setpixel(const struct nk_wayland* win,
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const short x0, const short y0, const struct nk_color col)
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{
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uint32_t c = nk_color_to_xrgb8888(col);
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uint32_t *pixels = (uint32_t *)win->data;
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unsigned int *ptr;
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pixels += (y0 * win->width);
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ptr = (unsigned int *)pixels + x0;
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if (y0 < win->scissors.h && y0 >= win->scissors.y && x0 >= win->scissors.x && x0 < win->scissors.w){
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*ptr = c;
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}else {
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printf("out of bound! \n");
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}
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}
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static void nk_wayland_fill_polygon(const struct nk_wayland* win, const struct nk_vec2i *pnts, int count, const struct nk_color col)
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{
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int i = 0;
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//#define MAX_POINTS 64
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int left = 10000, top = 10000, bottom = 0, right = 0;
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int nodes, nodeX[1024], pixelX, pixelY, j, swap ;
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if (count == 0) return;
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if (count > 1024)
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count = 1024;
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/* Get polygon dimensions */
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for (i = 0; i < count; i++) {
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if (left > pnts[i].x)
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left = pnts[i].x;
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if (right < pnts[i].x)
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right = pnts[i].x;
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if (top > pnts[i].y)
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top = pnts[i].y;
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if (bottom < pnts[i].y)
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bottom = pnts[i].y;
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} bottom++; right++;
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/* Polygon scanline algorithm released under public-domain by Darel Rex Finley, 2007 */
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/* Loop through the rows of the image. */
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for (pixelY = top; pixelY < bottom; pixelY ++) {
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nodes = 0; /* Build a list of nodes. */
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j = count - 1;
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for (i = 0; i < count; i++) {
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if (((pnts[i].y < pixelY) && (pnts[j].y >= pixelY)) ||
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((pnts[j].y < pixelY) && (pnts[i].y >= pixelY))) {
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nodeX[nodes++]= (int)((float)pnts[i].x
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+ ((float)pixelY - (float)pnts[i].y) / ((float)pnts[j].y - (float)pnts[i].y)
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* ((float)pnts[j].x - (float)pnts[i].x));
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} j = i;
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}
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/* Sort the nodes, via a simple “Bubble” sort. */
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i = 0;
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while (i < nodes - 1) {
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if (nodeX[i] > nodeX[i+1]) {
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swap = nodeX[i];
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nodeX[i] = nodeX[i+1];
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nodeX[i+1] = swap;
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if (i) i--;
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} else i++;
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}
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/* Fill the pixels between node pairs. */
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for (i = 0; i < nodes; i += 2) {
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if (nodeX[i+0] >= right) break;
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if (nodeX[i+1] > left) {
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if (nodeX[i+0] < left) nodeX[i+0] = left ;
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if (nodeX[i+1] > right) nodeX[i+1] = right;
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for (pixelX = nodeX[i]; pixelX < nodeX[i + 1]; pixelX++)
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nk_wayland_ctx_setpixel(win, pixelX, pixelY, col);
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}
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}
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}
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}
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static void nk_wayland_fill_arc(const struct nk_wayland* win, short x0, short y0, short w, short h, const short s, const struct nk_color col)
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{
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/* Bresenham's ellipses - modified to fill one quarter */
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const int a2 = (w * w) / 4;
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const int b2 = (h * h) / 4;
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const int fa2 = 4 * a2, fb2 = 4 * b2;
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int x, y, sigma;
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struct nk_vec2i pnts[3];
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if (w < 1 || h < 1) return;
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if (s != 0 && s != 90 && s != 180 && s != 270)
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return;
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/* Convert upper left to center */
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h = (h + 1) / 2;
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w = (w + 1) / 2;
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x0 += w;
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y0 += h;
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pnts[0].x = x0;
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pnts[0].y = y0;
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pnts[2].x = x0;
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pnts[2].y = y0;
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/* First half */
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for (x = 0, y = h, sigma = 2*b2+a2*(1-2*h); b2*x <= a2*y; x++) {
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if (s == 180) {
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pnts[1].x = x0 + x; pnts[1].y = y0 + y;
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} else if (s == 270) {
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pnts[1].x = x0 - x; pnts[1].y = y0 + y;
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} else if (s == 0) {
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pnts[1].x = x0 + x; pnts[1].y = y0 - y;
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} else if (s == 90) {
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pnts[1].x = x0 - x; pnts[1].y = y0 - y;
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}
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nk_wayland_fill_polygon(win, pnts, 3, col);
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pnts[2] = pnts[1];
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if (sigma >= 0) {
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sigma += fa2 * (1 - y);
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y--;
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} sigma += b2 * ((4 * x) + 6);
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}
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/* Second half */
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for (x = w, y = 0, sigma = 2*a2+b2*(1-2*w); a2*y <= b2*x; y++) {
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if (s == 180) {
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pnts[1].x = x0 + x; pnts[1].y = y0 + y;
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} else if (s == 270) {
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pnts[1].x = x0 - x; pnts[1].y = y0 + y;
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} else if (s == 0) {
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pnts[1].x = x0 + x; pnts[1].y = y0 - y;
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} else if (s == 90) {
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pnts[1].x = x0 - x; pnts[1].y = y0 - y;
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}
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nk_wayland_fill_polygon(win, pnts, 3, col);
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pnts[2] = pnts[1];
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if (sigma >= 0) {
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sigma += fb2 * (1 - x);
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x--;
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} sigma += a2 * ((4 * y) + 6);
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}
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}
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static void nk_wayland_img_setpixel(const struct wayland_img *img, const int x0, const int y0, const struct nk_color col)
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{
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unsigned int c = nk_wayland_color2int(col, img->pl);
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unsigned char *ptr;
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unsigned int *pixel;
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NK_ASSERT(img);
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if (y0 < img->h && y0 >= 0 && x0 >= 0 && x0 < img->w) {
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ptr = (unsigned char *)img->pixels + (img->pitch * y0);
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pixel = (unsigned int *)ptr;
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if (img->format == NK_FONT_ATLAS_ALPHA8) {
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ptr[x0] = col.a;
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} else {
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pixel[x0] = c;
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}
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}
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}
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static struct nk_color nk_wayland_getpixel(const struct nk_wayland* win, const int x0, const int y0)
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{
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struct nk_color col = {0, 0, 0, 0};
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uint32_t *ptr;
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if (y0 < win->height && y0 >= 0 && x0 >= 0 && x0 < win->width) {
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ptr = (uint32_t *)win->data + (y0 * win->width);
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col = nk_wayland_int2color(*ptr, PIXEL_LAYOUT_XRGB_8888);
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}
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return col;
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}
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static struct nk_color nk_wayland_img_getpixel(const struct wayland_img *img, const int x0, const int y0)
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{
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struct nk_color col = {0, 0, 0, 0};
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unsigned char *ptr;
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unsigned int pixel;
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NK_ASSERT(img);
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if (y0 < img->h && y0 >= 0 && x0 >= 0 && x0 < img->w) {
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ptr = (unsigned char *)img->pixels + (img->pitch * y0);
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if (img->format == NK_FONT_ATLAS_ALPHA8) {
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col.a = ptr[x0];
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col.b = col.g = col.r = 0xff;
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} else {
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pixel = ((unsigned int *)ptr)[x0];
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col = nk_wayland_int2color(pixel, img->pl);
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}
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} return col;
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}
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static void nk_wayland_blendpixel(const struct nk_wayland* win, const int x0, const int y0, struct nk_color col)
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{
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struct nk_color col2;
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unsigned char inv_a;
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if (col.a == 0)
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return;
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inv_a = 0xff - col.a;
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col2 = nk_wayland_getpixel(win, x0, y0);
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col.r = (col.r * col.a + col2.r * inv_a) >> 8;
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col.g = (col.g * col.a + col2.g * inv_a) >> 8;
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col.b = (col.b * col.a + col2.b * inv_a) >> 8;
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nk_wayland_ctx_setpixel(win, x0, y0, col);
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}
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static void nk_wayland_img_blendpixel(const struct wayland_img *img, const int x0, const int y0, struct nk_color col)
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{
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struct nk_color col2;
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unsigned char inv_a;
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if (col.a == 0)
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return;
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inv_a = 0xff - col.a;
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col2 = nk_wayland_img_getpixel(img, x0, y0);
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col.r = (col.r * col.a + col2.r * inv_a) >> 8;
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col.g = (col.g * col.a + col2.g * inv_a) >> 8;
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col.b = (col.b * col.a + col2.b * inv_a) >> 8;
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nk_wayland_img_setpixel(img, x0, y0, col);
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}
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static void nk_wayland_line_horizontal(const struct nk_wayland* win, const short x0, const short y, const short x1, const struct nk_color col)
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{
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/* This function is called the most. Try to optimize it a bit...
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* It does not check for scissors or image borders.
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* The caller has to make sure it does no exceed bounds. */
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unsigned int i, n;
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unsigned int c[16];
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unsigned char *pixels = (uint8_t*)win->data;
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unsigned int *ptr;
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pixels += (y * (win->width * 4));
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ptr = (unsigned int *)pixels + x0;
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n = x1 - x0;
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for (i = 0; i < sizeof(c) / sizeof(c[0]); i++)
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c[i] = nk_color_to_xrgb8888(col);
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while (n > 16) {
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memcpy((void *)ptr, c, sizeof(c));
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n -= 16; ptr += 16;
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} for (i = 0; i < n; i++)
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ptr[i] = c[i];
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}
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static void nk_wayland_scissor(struct nk_wayland* win, const float x, const float y, const float w, const float h)
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{
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win->scissors.x = MIN(MAX(x, 0), WIDTH);
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win->scissors.y = MIN(MAX(y, 0), HEIGHT);
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win->scissors.w = MIN(MAX(w + x, 0), WIDTH);
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win->scissors.h = MIN(MAX(h + y, 0), HEIGHT);
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}
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static void nk_wayland_stroke_line(const struct nk_wayland* win, short x0, short y0, short x1, short y1, const unsigned int line_thickness, const struct nk_color col)
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{
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short tmp;
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int dy, dx, stepx, stepy;
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NK_UNUSED(line_thickness);
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dy = y1 - y0;
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dx = x1 - x0;
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//printf("\n\n\n\n");
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// fast path
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if (dy == 0) {
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if (dx == 0 || y0 >= win->scissors.h || y0 < win->scissors.y){
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return;
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}
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if (dx < 0) {
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// swap x0 and x1
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tmp = x1;
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x1 = x0;
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x0 = tmp;
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}
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x1 = MIN(win->scissors.w, x1);
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x0 = MIN(win->scissors.w, x0);
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x1 = MAX(win->scissors.x, x1);
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x0 = MAX(win->scissors.x, x0);
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nk_wayland_line_horizontal(win, x0, y0, x1, col);
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return;
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}
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if (dy < 0) {
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dy = -dy;
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stepy = -1;
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} else stepy = 1;
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if (dx < 0) {
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dx = -dx;
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stepx = -1;
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} else stepx = 1;
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dy <<= 1;
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dx <<= 1;
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nk_wayland_ctx_setpixel(win, x0, y0, col);
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if (dx > dy) {
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int fraction = dy - (dx >> 1);
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while (x0 != x1) {
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if (fraction >= 0) {
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y0 += stepy;
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fraction -= dx;
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}
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x0 += stepx;
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fraction += dy;
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nk_wayland_ctx_setpixel(win, x0, y0, col);
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}
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} else {
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int fraction = dx - (dy >> 1);
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while (y0 != y1) {
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if (fraction >= 0) {
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x0 += stepx;
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fraction -= dy;
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}
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y0 += stepy;
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fraction += dx;
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nk_wayland_ctx_setpixel(win, x0, y0, col);
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}
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}
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}
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static void
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nk_wayland_fill_rect(const struct nk_wayland* win,
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const short x, const short y, const short w, const short h,
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const short r, const struct nk_color col)
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{
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int i;
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if (r == 0) {
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for (i = 0; i < h; i++)
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nk_wayland_stroke_line(win, x, y + i, x + w, y + i, 1, col);
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} else {
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const short xc = x + r;
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const short yc = y + r;
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const short wc = (short)(w - 2 * r);
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const short hc = (short)(h - 2 * r);
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struct nk_vec2i pnts[12];
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pnts[0].x = x;
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pnts[0].y = yc;
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pnts[1].x = xc;
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pnts[1].y = yc;
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pnts[2].x = xc;
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pnts[2].y = y;
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pnts[3].x = xc + wc;
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pnts[3].y = y;
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pnts[4].x = xc + wc;
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pnts[4].y = yc;
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pnts[5].x = x + w;
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pnts[5].y = yc;
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pnts[6].x = x + w;
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pnts[6].y = yc + hc;
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pnts[7].x = xc + wc;
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pnts[7].y = yc + hc;
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pnts[8].x = xc + wc;
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pnts[8].y = y + h;
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pnts[9].x = xc;
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pnts[9].y = y + h;
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pnts[10].x = xc;
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pnts[10].y = yc + hc;
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pnts[11].x = x;
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pnts[11].y = yc + hc;
|
|
|
|
nk_wayland_fill_polygon(win, pnts, 12, col);
|
|
|
|
nk_wayland_fill_arc(win, xc + wc - r, y,
|
|
(unsigned)r*2, (unsigned)r*2, 0 , col);
|
|
nk_wayland_fill_arc(win, x, y,
|
|
(unsigned)r*2, (unsigned)r*2, 90 , col);
|
|
nk_wayland_fill_arc(win, x, yc + hc - r,
|
|
(unsigned)r*2, (unsigned)r*2, 270 , col);
|
|
nk_wayland_fill_arc(win, xc + wc - r, yc + hc - r,
|
|
(unsigned)r*2, (unsigned)r*2, 180 , col);
|
|
}
|
|
}
|
|
|
|
static void nk_wayland_stroke_arc(const struct nk_wayland* win,
|
|
short x0, short y0, short w, short h, const short s,
|
|
const short line_thickness, const struct nk_color col)
|
|
{
|
|
/* Bresenham's ellipses - modified to draw one quarter */
|
|
const int a2 = (w * w) / 4;
|
|
const int b2 = (h * h) / 4;
|
|
const int fa2 = 4 * a2, fb2 = 4 * b2;
|
|
int x, y, sigma;
|
|
|
|
NK_UNUSED(line_thickness);
|
|
|
|
if (s != 0 && s != 90 && s != 180 && s != 270) return;
|
|
if (w < 1 || h < 1) return;
|
|
|
|
/* Convert upper left to center */
|
|
h = (h + 1) / 2;
|
|
w = (w + 1) / 2;
|
|
x0 += w; y0 += h;
|
|
|
|
/* First half */
|
|
for (x = 0, y = h, sigma = 2*b2+a2*(1-2*h); b2*x <= a2*y; x++) {
|
|
if (s == 180)
|
|
nk_wayland_ctx_setpixel(win, x0 + x, y0 + y, col);
|
|
else if (s == 270)
|
|
nk_wayland_ctx_setpixel(win, x0 - x, y0 + y, col);
|
|
else if (s == 0)
|
|
nk_wayland_ctx_setpixel(win, x0 + x, y0 - y, col);
|
|
else if (s == 90)
|
|
nk_wayland_ctx_setpixel(win, x0 - x, y0 - y, col);
|
|
if (sigma >= 0) {
|
|
sigma += fa2 * (1 - y);
|
|
y--;
|
|
} sigma += b2 * ((4 * x) + 6);
|
|
}
|
|
|
|
/* Second half */
|
|
for (x = w, y = 0, sigma = 2*a2+b2*(1-2*w); a2*y <= b2*x; y++) {
|
|
if (s == 180)
|
|
nk_wayland_ctx_setpixel(win, x0 + x, y0 + y, col);
|
|
else if (s == 270)
|
|
nk_wayland_ctx_setpixel(win, x0 - x, y0 + y, col);
|
|
else if (s == 0)
|
|
nk_wayland_ctx_setpixel(win, x0 + x, y0 - y, col);
|
|
else if (s == 90)
|
|
nk_wayland_ctx_setpixel(win, x0 - x, y0 - y, col);
|
|
if (sigma >= 0) {
|
|
sigma += fb2 * (1 - x);
|
|
x--;
|
|
} sigma += a2 * ((4 * y) + 6);
|
|
}
|
|
}
|
|
|
|
|
|
|
|
|
|
static void nk_wayland_stroke_rect(const struct nk_wayland* win,
|
|
const short x, const short y, const short w, const short h,
|
|
const short r, const short line_thickness, const struct nk_color col)
|
|
{
|
|
if (r == 0) {
|
|
nk_wayland_stroke_line(win, x, y, x + w, y, line_thickness, col);
|
|
nk_wayland_stroke_line(win, x, y + h, x + w, y + h, line_thickness, col);
|
|
nk_wayland_stroke_line(win, x, y, x, y + h, line_thickness, col);
|
|
nk_wayland_stroke_line(win, x + w, y, x + w, y + h, line_thickness, col);
|
|
} else {
|
|
const short xc = x + r;
|
|
const short yc = y + r;
|
|
const short wc = (short)(w - 2 * r);
|
|
const short hc = (short)(h - 2 * r);
|
|
|
|
nk_wayland_stroke_line(win, xc, y, xc + wc, y, line_thickness, col);
|
|
nk_wayland_stroke_line(win, x + w, yc, x + w, yc + hc, line_thickness, col);
|
|
nk_wayland_stroke_line(win, xc, y + h, xc + wc, y + h, line_thickness, col);
|
|
nk_wayland_stroke_line(win, x, yc, x, yc + hc, line_thickness, col);
|
|
|
|
nk_wayland_stroke_arc(win, xc + wc - r, y,
|
|
(unsigned)r*2, (unsigned)r*2, 0 , line_thickness, col);
|
|
nk_wayland_stroke_arc(win, x, y,
|
|
(unsigned)r*2, (unsigned)r*2, 90 , line_thickness, col);
|
|
nk_wayland_stroke_arc(win, x, yc + hc - r,
|
|
(unsigned)r*2, (unsigned)r*2, 270 , line_thickness, col);
|
|
nk_wayland_stroke_arc(win, xc + wc - r, yc + hc - r,
|
|
(unsigned)r*2, (unsigned)r*2, 180 , line_thickness, col);
|
|
}
|
|
}
|
|
|
|
static void nk_wayland_fill_triangle(const struct nk_wayland *win,
|
|
const short x0, const short y0, const short x1, const short y1,
|
|
const short x2, const short y2, const struct nk_color col)
|
|
{
|
|
struct nk_vec2i pnts[3];
|
|
pnts[0].x = x0;
|
|
pnts[0].y = y0;
|
|
pnts[1].x = x1;
|
|
pnts[1].y = y1;
|
|
pnts[2].x = x2;
|
|
pnts[2].y = y2;
|
|
nk_wayland_fill_polygon(win, pnts, 3, col);
|
|
}
|
|
|
|
static void nk_wayland_clear(const struct nk_wayland *win, const struct nk_color col)
|
|
{
|
|
nk_wayland_fill_rect(win, 0, 0, win->width, win->height, 0, col);
|
|
}
|
|
|
|
static void nk_wayland_fill_circle(struct nk_wayland* win, short x0, short y0, short w, short h, const struct nk_color col)
|
|
{
|
|
/* Bresenham's ellipses */
|
|
const int a2 = (w * w) / 4;
|
|
const int b2 = (h * h) / 4;
|
|
const int fa2 = 4 * a2, fb2 = 4 * b2;
|
|
int x, y, sigma;
|
|
|
|
/* Convert upper left to center */
|
|
h = (h + 1) / 2;
|
|
w = (w + 1) / 2;
|
|
x0 += w;
|
|
y0 += h;
|
|
|
|
/* First half */
|
|
for (x = 0, y = h, sigma = 2*b2+a2*(1-2*h); b2*x <= a2*y; x++) {
|
|
nk_wayland_stroke_line(win, x0 - x, y0 + y, x0 + x, y0 + y, 1, col);
|
|
nk_wayland_stroke_line(win, x0 - x, y0 - y, x0 + x, y0 - y, 1, col);
|
|
if (sigma >= 0) {
|
|
sigma += fa2 * (1 - y);
|
|
y--;
|
|
} sigma += b2 * ((4 * x) + 6);
|
|
}
|
|
/* Second half */
|
|
for (x = w, y = 0, sigma = 2*a2+b2*(1-2*w); a2*y <= b2*x; y++) {
|
|
nk_wayland_stroke_line(win, x0 - x, y0 + y, x0 + x, y0 + y, 1, col);
|
|
nk_wayland_stroke_line(win, x0 - x, y0 - y, x0 + x, y0 - y, 1, col);
|
|
if (sigma >= 0) {
|
|
sigma += fb2 * (1 - x);
|
|
x--;
|
|
} sigma += a2 * ((4 * y) + 6);
|
|
}
|
|
}
|
|
/**
|
|
* Copy wayland_img into nk_wayland with scissor & stretch
|
|
*/
|
|
static void nk_wayland_copy_image(const struct nk_wayland *win, const struct wayland_img *src,
|
|
const struct nk_rect *dst_rect,
|
|
const struct nk_rect *src_rect,
|
|
const struct nk_rect *dst_scissors,
|
|
const struct nk_color *fg)
|
|
{
|
|
short i, j;
|
|
struct nk_color col;
|
|
float xinc = src_rect->w / dst_rect->w;
|
|
float yinc = src_rect->h / dst_rect->h;
|
|
float xoff = src_rect->x, yoff = src_rect->y;
|
|
|
|
// Simple nearest filtering rescaling
|
|
// TODO: use bilinear filter
|
|
for (j = 0; j < (short)dst_rect->h; j++) {
|
|
for (i = 0; i < (short)dst_rect->w; i++) {
|
|
if (dst_scissors) {
|
|
if (i + (int)(dst_rect->x + 0.5f) < dst_scissors->x || i + (int)(dst_rect->x + 0.5f) >= dst_scissors->w)
|
|
continue;
|
|
if (j + (int)(dst_rect->y + 0.5f) < dst_scissors->y || j + (int)(dst_rect->y + 0.5f) >= dst_scissors->h)
|
|
continue;
|
|
}
|
|
col = nk_wayland_img_getpixel(src, (int)xoff, (int) yoff);
|
|
if (col.r || col.g || col.b)
|
|
{
|
|
col.r = fg->r;
|
|
col.g = fg->g;
|
|
col.b = fg->b;
|
|
}
|
|
nk_wayland_blendpixel(win, i + (int)(dst_rect->x + 0.5f), j + (int)(dst_rect->y + 0.5f), col);
|
|
xoff += xinc;
|
|
}
|
|
xoff = src_rect->x;
|
|
yoff += yinc;
|
|
}
|
|
}
|
|
|
|
static void nk_wayland_font_query_font_glyph(nk_handle handle, const float height, struct nk_user_font_glyph *glyph, const nk_rune codepoint, const nk_rune next_codepoint)
|
|
{
|
|
float scale;
|
|
const struct nk_font_glyph *g;
|
|
struct nk_font *font;
|
|
NK_ASSERT(glyph);
|
|
NK_UNUSED(next_codepoint);
|
|
|
|
font = (struct nk_font*)handle.ptr;
|
|
NK_ASSERT(font);
|
|
NK_ASSERT(font->glyphs);
|
|
if (!font || !glyph)
|
|
return;
|
|
|
|
scale = height/font->info.height;
|
|
g = nk_font_find_glyph(font, codepoint);
|
|
glyph->width = (g->x1 - g->x0) * scale;
|
|
glyph->height = (g->y1 - g->y0) * scale;
|
|
glyph->offset = nk_vec2(g->x0 * scale, g->y0 * scale);
|
|
glyph->xadvance = (g->xadvance * scale);
|
|
glyph->uv[0] = nk_vec2(g->u0, g->v0);
|
|
glyph->uv[1] = nk_vec2(g->u1, g->v1);
|
|
}
|
|
|
|
void nk_wayland_draw_text(const struct nk_wayland *win, const struct nk_user_font *font, const struct nk_rect rect, const char *text, const int len, const float font_height, const struct nk_color fg)
|
|
{
|
|
float x = 0;
|
|
int text_len = 0;
|
|
nk_rune unicode = 0;
|
|
nk_rune next = 0;
|
|
int glyph_len = 0;
|
|
int next_glyph_len = 0;
|
|
struct nk_user_font_glyph g;
|
|
if (!len || !text) return;
|
|
|
|
x = 0;
|
|
glyph_len = nk_utf_decode(text, &unicode, len);
|
|
if (!glyph_len) return;
|
|
|
|
// draw every glyph image
|
|
while (text_len < len && glyph_len) {
|
|
struct nk_rect src_rect;
|
|
struct nk_rect dst_rect;
|
|
float char_width = 0;
|
|
if (unicode == NK_UTF_INVALID) break;
|
|
|
|
// query currently drawn glyph information
|
|
next_glyph_len = nk_utf_decode(text + text_len + glyph_len, &next, (int)len - text_len);
|
|
nk_wayland_font_query_font_glyph(font->userdata, font_height, &g, unicode,
|
|
(next == NK_UTF_INVALID) ? '\0' : next);
|
|
|
|
//calculate and draw glyph drawing rectangle and image
|
|
char_width = g.xadvance;
|
|
src_rect.x = g.uv[0].x * win->font_tex.w;
|
|
src_rect.y = g.uv[0].y * win->font_tex.h;
|
|
src_rect.w = g.uv[1].x * win->font_tex.w - g.uv[0].x * win->font_tex.w;
|
|
src_rect.h = g.uv[1].y * win->font_tex.h - g.uv[0].y * win->font_tex.h;
|
|
|
|
dst_rect.x = x + g.offset.x + rect.x;
|
|
dst_rect.y = g.offset.y + rect.y;
|
|
dst_rect.w = ceilf(g.width);
|
|
dst_rect.h = ceilf(g.height);
|
|
|
|
// Use software rescaling to blit glyph from font_text to framebuffer
|
|
nk_wayland_copy_image(win, &(win->font_tex), &dst_rect, &src_rect, &(win->scissors), &fg);
|
|
|
|
// offset next glyph
|
|
text_len += glyph_len;
|
|
x += char_width;
|
|
glyph_len = next_glyph_len;
|
|
unicode = next;
|
|
}
|
|
}
|
|
|
|
static void nk_wayland_render(struct nk_wayland *win, const struct nk_color clear, const unsigned char enable_clear)
|
|
{
|
|
const struct nk_command *cmd;
|
|
const struct nk_command_text *tx;
|
|
const struct nk_command_scissor *s;
|
|
const struct nk_command_rect_filled *rf;
|
|
const struct nk_command_rect *r;
|
|
const struct nk_command_circle_filled *c;
|
|
const struct nk_command_triangle_filled *t;
|
|
const struct nk_command_line *l;
|
|
const struct nk_command_polygon_filled *p;
|
|
|
|
if (enable_clear)
|
|
nk_wayland_clear(win, clear);
|
|
|
|
nk_foreach(cmd, (struct nk_context*)&(win->ctx)) {
|
|
switch (cmd->type) {
|
|
case NK_COMMAND_NOP:
|
|
//printf("NK_COMMAND_NOP \n");
|
|
break;
|
|
|
|
case NK_COMMAND_SCISSOR:
|
|
s = (const struct nk_command_scissor*)cmd;
|
|
nk_wayland_scissor(win, s->x, s->y, s->w, s->h);
|
|
break;
|
|
|
|
case NK_COMMAND_LINE:
|
|
l = (const struct nk_command_line *)cmd;
|
|
nk_wayland_stroke_line(win, l->begin.x, l->begin.y, l->end.x, l->end.y, l->line_thickness, l->color);
|
|
break;
|
|
|
|
case NK_COMMAND_RECT:
|
|
r = (const struct nk_command_rect *)cmd;
|
|
nk_wayland_stroke_rect(win, r->x, r->y, r->w, r->h, (unsigned short)r->rounding, r->line_thickness, r->color);
|
|
break;
|
|
|
|
case NK_COMMAND_RECT_FILLED:
|
|
rf = (const struct nk_command_rect_filled *)cmd;
|
|
nk_wayland_fill_rect(win, rf->x, rf->y, rf->w, rf->h, (unsigned short)rf->rounding, rf->color);
|
|
break;
|
|
|
|
case NK_COMMAND_CIRCLE:
|
|
// printf("NK_COMMAND_CIRCLE \n");
|
|
//const struct nk_command_circle *c = (const struct nk_command_circle *)cmd;
|
|
//nk_rawfb_stroke_circle(rawfb, c->x, c->y, c->w, c->h, c->line_thickness, c->color);
|
|
break;
|
|
|
|
case NK_COMMAND_CIRCLE_FILLED:
|
|
c = (const struct nk_command_circle_filled *)cmd;
|
|
nk_wayland_fill_circle(win, c->x, c->y, c->w, c->h, c->color);
|
|
|
|
//const struct nk_command_circle_filled *c = (const struct nk_command_circle_filled *)cmd;
|
|
//nk_rawfb_fill_circle(rawfb, c->x, c->y, c->w, c->h, c->color);
|
|
break;
|
|
|
|
case NK_COMMAND_TRIANGLE:
|
|
//printf("NK_COMMAND_TRIANGLE \n");
|
|
//const struct nk_command_triangle*t = (const struct nk_command_triangle*)cmd;
|
|
//nk_rawfb_stroke_triangle(rawfb, t->a.x, t->a.y, t->b.x, t->b.y, t->c.x, t->c.y, t->line_thickness, t->color);
|
|
break;
|
|
|
|
case NK_COMMAND_TRIANGLE_FILLED:
|
|
t = (const struct nk_command_triangle_filled *)cmd;
|
|
nk_wayland_fill_triangle(win, t->a.x, t->a.y, t->b.x, t->b.y, t->c.x, t->c.y, t->color);
|
|
break;
|
|
|
|
case NK_COMMAND_POLYGON:
|
|
// printf("NK_COMMAND_POLYGON \n");
|
|
//const struct nk_command_polygon *p =(const struct nk_command_polygon*)cmd;
|
|
//nk_rawfb_stroke_polygon(rawfb, p->points, p->point_count, p->line_thickness,p->color);
|
|
break;
|
|
|
|
case NK_COMMAND_POLYGON_FILLED:
|
|
// printf("NK_COMMAND_POLYGON_FILLED \n");
|
|
p = (const struct nk_command_polygon_filled *)cmd;
|
|
nk_wayland_fill_polygon(win, p->points, p->point_count, p->color);
|
|
break;
|
|
|
|
case NK_COMMAND_POLYLINE:
|
|
// printf("NK_COMMAND_POLYLINE \n");
|
|
//const struct nk_command_polyline *p = (const struct nk_command_polyline *)cmd;
|
|
//nk_rawfb_stroke_polyline(rawfb, p->points, p->point_count, p->line_thickness, p->color);
|
|
break;
|
|
|
|
case NK_COMMAND_TEXT:
|
|
tx = (const struct nk_command_text*)cmd;
|
|
nk_wayland_draw_text(win, tx->font, nk_rect(tx->x, tx->y, tx->w, tx->h), tx->string, tx->length, tx->height, tx->foreground);
|
|
break;
|
|
|
|
case NK_COMMAND_CURVE:
|
|
// printf("NK_COMMAND_CURVE \n");
|
|
//const struct nk_command_curve *q = (const struct nk_command_curve *)cmd;
|
|
//nk_rawfb_stroke_curve(rawfb, q->begin, q->ctrl[0], q->ctrl[1], q->end, 22, q->line_thickness, q->color);
|
|
break;
|
|
|
|
case NK_COMMAND_RECT_MULTI_COLOR:
|
|
// printf("NK_COMMAND_RECT_MULTI_COLOR \n");
|
|
//const struct nk_command_rect_multi_color *q = (const struct nk_command_rect_multi_color *)cmd;
|
|
//nk_rawfb_draw_rect_multi_color(rawfb, q->x, q->y, q->w, q->h, q->left, q->top, q->right, q->bottom);
|
|
break;
|
|
|
|
case NK_COMMAND_IMAGE:
|
|
//printf("NK_COMMAND_IMAGE \n");
|
|
// const struct nk_command_image *q = (const struct nk_command_image *)cmd;
|
|
// nk_rawfb_drawimage(rawfb, q->x, q->y, q->w, q->h, &q->img, &q->col);
|
|
break;
|
|
|
|
case NK_COMMAND_ARC:
|
|
printf("NK_COMMAND_ARC \n");
|
|
assert(0 && "NK_COMMAND_ARC not implemented\n");
|
|
break;
|
|
|
|
case NK_COMMAND_ARC_FILLED:
|
|
printf("NK_COMMAND_ARC \n");
|
|
assert(0 && "NK_COMMAND_ARC_FILLED not implemented\n");
|
|
break;
|
|
|
|
default:
|
|
printf("unhandled OP: %d \n", cmd->type);
|
|
break;
|
|
}
|
|
} nk_clear(&(win->ctx));
|
|
}
|
|
|
|
#endif
|