NK_LIB void nk_draw_scrollbar(struct nk_command_buffer *out, nk_flags state, const struct nk_style_scrollbar *style, const struct nk_rect *bounds, const struct nk_rect *scroll) { const struct nk_style_item *background; const struct nk_style_item *cursor; /* select correct colors/images to draw */ if (state & NK_WIDGET_STATE_ACTIVED) { background = &style->active; cursor = &style->cursor_active; } else if (state & NK_WIDGET_STATE_HOVER) { background = &style->hover; cursor = &style->cursor_hover; } else { background = &style->normal; cursor = &style->cursor_normal; } /* draw background */ if (background->type == NK_STYLE_ITEM_COLOR) { nk_fill_rect(out, *bounds, style->rounding, background->data.color); nk_stroke_rect(out, *bounds, style->rounding, style->border, style->border_color); } else { nk_draw_image(out, *bounds, &background->data.image, nk_white); } /* draw cursor */ if (cursor->type == NK_STYLE_ITEM_COLOR) { nk_fill_rect(out, *scroll, style->rounding_cursor, cursor->data.color); nk_stroke_rect(out, *scroll, style->rounding_cursor, style->border_cursor, style->cursor_border_color); } else nk_draw_image(out, *scroll, &cursor->data.image, nk_white); }
int main(int argc, char *argv[]) { /* register callbacks */ mpx_register_vc(&this_vc); /* GUI */ static struct nk_context ctx; static struct nk_canvas canvas; uint32_t width = 0, height = 0; static struct nk_user_font font; font.userdata.ptr = &width; font.height = font_vga_8x16.height; font.width = your_text_width_calculation; nk_init_default(&ctx, &font); width = this_vc.fb->var.xres; height = this_vc.fb->var.yres; /* Draw */ while (1) { /* what to draw */ canvas_begin(&ctx, &canvas, 0, 0, 0, width, height, nk_rgb(100,100,100)); { canvas.painter->use_clipping = NK_CLIPPING_OFF; nk_fill_rect(canvas.painter, nk_rect(15,15,140,140), 5, nk_rgb(247, 230, 154)); nk_fill_rect(canvas.painter, nk_rect(20,20,135,135), 5, nk_rgb(188, 174, 118)); nk_draw_text(canvas.painter, nk_rect(30, 30, 100, 20), "Text to draw", 12, &font, nk_rgb(188,174,118), nk_rgb(0,0,0)); nk_fill_rect(canvas.painter, nk_rect(160,20,70,70), 0, nk_rgb(0,0,255)); nk_fill_circle(canvas.painter, nk_rect(20,160,60,60), nk_rgb(255,0,0)); nk_fill_triangle(canvas.painter, 160, 160, 230, 160, 195, 220, nk_rgb(0,255,0)); nk_fill_arc(canvas.painter, 195, 120, 30, 0, 3.141592654f * 3.0f / 4.0f, nk_rgb(255,255,0)); nk_stroke_line(canvas.painter, 15, 10, 100, 10, 2.0f, nk_rgb(189,45,75)); nk_stroke_rect(canvas.painter, nk_rect(235, 20, 70, 70), 10, 3, nk_rgb(0,0,255)); nk_stroke_curve(canvas.painter, 235, 130, 252, 170, 288, 80, 305, 130, 1, nk_rgb(0,150,220)); nk_stroke_triangle(canvas.painter, 235, 160, 305, 160, 270, 220, 10, nk_rgb(255,0,143)); nk_stroke_circle(canvas.painter, nk_rect(90, 160, 60, 60), 2, nk_rgb(0,255,120)); /* load some image */ // uint32_t im_w, im_h, im_format; // images[0] = stbi_load("SPBGU_logo.png", &im_w, &im_h, &im_format, 0); // if (images[0] == NULL) // printf("\nstbi_load doesn't work. :(\n"); // else { // printf("\nLoaded image: id = %i width = %i\theight = %i\tformat = %i", (int)*images[0], im_w, im_h, im_format); struct nk_image im; im.handle.ptr = "SPBGU_logo.png"; im.handle.id = 0; im.w = 0; im.h = 0; im.region[0] = 0; im.region[1] = 0; im.region[2] = 267; im.region[3] = 333; nk_draw_image(canvas.painter, nk_rect(320, 10, 130, 150), &im, nk_rgb(100, 0, 0)); // } // stbi_image_free(images[0]); } canvas_end(&ctx, &canvas); /* Draw each element */ draw(&this_vc, &ctx, width, height); } nk_free(&ctx); printf("\nEnd of program.\nIf you see it then something goes wrong.\n"); return 0; }
NK_API int nk_combo_begin_image_text(struct nk_context *ctx, const char *selected, int len, struct nk_image img, struct nk_vec2 size) { struct nk_window *win; struct nk_style *style; struct nk_input *in; struct nk_rect header; int is_clicked = nk_false; enum nk_widget_layout_states s; const struct nk_style_item *background; struct nk_text text; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return 0; win = ctx->current; style = &ctx->style; s = nk_widget(&header, ctx); if (!s) return 0; in = (win->layout->flags & NK_WINDOW_ROM || s == NK_WIDGET_ROM)? 0: &ctx->input; if (nk_button_behavior(&ctx->last_widget_state, header, in, NK_BUTTON_DEFAULT)) is_clicked = nk_true; /* draw combo box header background and border */ if (ctx->last_widget_state & NK_WIDGET_STATE_ACTIVED) { background = &style->combo.active; text.text = style->combo.label_active; } else if (ctx->last_widget_state & NK_WIDGET_STATE_HOVER) { background = &style->combo.hover; text.text = style->combo.label_hover; } else { background = &style->combo.normal; text.text = style->combo.label_normal; } if (background->type == NK_STYLE_ITEM_IMAGE) { text.background = nk_rgba(0,0,0,0); nk_draw_image(&win->buffer, header, &background->data.image, nk_white); } else { text.background = background->data.color; nk_fill_rect(&win->buffer, header, style->combo.rounding, background->data.color); nk_stroke_rect(&win->buffer, header, style->combo.rounding, style->combo.border, style->combo.border_color); } { struct nk_rect content; struct nk_rect button; struct nk_rect label; struct nk_rect image; enum nk_symbol_type sym; if (ctx->last_widget_state & NK_WIDGET_STATE_HOVER) sym = style->combo.sym_hover; else if (is_clicked) sym = style->combo.sym_active; else sym = style->combo.sym_normal; /* calculate button */ button.w = header.h - 2 * style->combo.button_padding.y; button.x = (header.x + header.w - header.h) - style->combo.button_padding.x; button.y = header.y + style->combo.button_padding.y; button.h = button.w; content.x = button.x + style->combo.button.padding.x; content.y = button.y + style->combo.button.padding.y; content.w = button.w - 2 * style->combo.button.padding.x; content.h = button.h - 2 * style->combo.button.padding.y; nk_draw_button_symbol(&win->buffer, &button, &content, ctx->last_widget_state, &ctx->style.combo.button, sym, style->font); /* draw image */ image.x = header.x + style->combo.content_padding.x; image.y = header.y + style->combo.content_padding.y; image.h = header.h - 2 * style->combo.content_padding.y; image.w = image.h; nk_draw_image(&win->buffer, image, &img, nk_white); /* draw label */ text.padding = nk_vec2(0,0); label.x = image.x + image.w + style->combo.spacing.x + style->combo.content_padding.x; label.y = header.y + style->combo.content_padding.y; label.w = (button.x - style->combo.content_padding.x) - label.x; label.h = header.h - 2 * style->combo.content_padding.y; nk_widget_text(&win->buffer, label, selected, len, &text, NK_TEXT_LEFT, style->font); } return nk_combo_begin(ctx, win, size, is_clicked, header); }
NK_API int nk_combo_begin_image(struct nk_context *ctx, struct nk_image img, struct nk_vec2 size) { struct nk_window *win; struct nk_style *style; const struct nk_input *in; struct nk_rect header; int is_clicked = nk_false; enum nk_widget_layout_states s; const struct nk_style_item *background; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return 0; win = ctx->current; style = &ctx->style; s = nk_widget(&header, ctx); if (s == NK_WIDGET_INVALID) return 0; in = (win->layout->flags & NK_WINDOW_ROM || s == NK_WIDGET_ROM)? 0: &ctx->input; if (nk_button_behavior(&ctx->last_widget_state, header, in, NK_BUTTON_DEFAULT)) is_clicked = nk_true; /* draw combo box header background and border */ if (ctx->last_widget_state & NK_WIDGET_STATE_ACTIVED) background = &style->combo.active; else if (ctx->last_widget_state & NK_WIDGET_STATE_HOVER) background = &style->combo.hover; else background = &style->combo.normal; if (background->type == NK_STYLE_ITEM_IMAGE) { nk_draw_image(&win->buffer, header, &background->data.image, nk_white); } else { nk_fill_rect(&win->buffer, header, style->combo.rounding, background->data.color); nk_stroke_rect(&win->buffer, header, style->combo.rounding, style->combo.border, style->combo.border_color); } { struct nk_rect bounds = {0,0,0,0}; struct nk_rect content; struct nk_rect button; enum nk_symbol_type sym; if (ctx->last_widget_state & NK_WIDGET_STATE_HOVER) sym = style->combo.sym_hover; else if (is_clicked) sym = style->combo.sym_active; else sym = style->combo.sym_normal; /* calculate button */ button.w = header.h - 2 * style->combo.button_padding.y; button.x = (header.x + header.w - header.h) - style->combo.button_padding.y; button.y = header.y + style->combo.button_padding.y; button.h = button.w; content.x = button.x + style->combo.button.padding.x; content.y = button.y + style->combo.button.padding.y; content.w = button.w - 2 * style->combo.button.padding.x; content.h = button.h - 2 * style->combo.button.padding.y; /* draw image */ bounds.h = header.h - 2 * style->combo.content_padding.y; bounds.y = header.y + style->combo.content_padding.y; bounds.x = header.x + style->combo.content_padding.x; bounds.w = (button.x - style->combo.content_padding.y) - bounds.x; nk_draw_image(&win->buffer, bounds, &img, nk_white); /* draw open/close button */ nk_draw_button_symbol(&win->buffer, &bounds, &content, ctx->last_widget_state, &ctx->style.combo.button, sym, style->font); } return nk_combo_begin(ctx, win, size, is_clicked, header); }