mirror of https://github.com/vurtun/nuklear.git
342 lines
12 KiB
C
342 lines
12 KiB
C
#include "nuklear.h"
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#include "nuklear_internal.h"
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/* ===============================================================
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*
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* TREE
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*
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* ===============================================================*/
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NK_INTERN int
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nk_tree_state_base(struct nk_context *ctx, enum nk_tree_type type,
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struct nk_image *img, const char *title, enum nk_collapse_states *state)
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{
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struct nk_window *win;
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struct nk_panel *layout;
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const struct nk_style *style;
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struct nk_command_buffer *out;
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const struct nk_input *in;
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const struct nk_style_button *button;
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enum nk_symbol_type symbol;
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float row_height;
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struct nk_vec2 item_spacing;
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struct nk_rect header = {0,0,0,0};
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struct nk_rect sym = {0,0,0,0};
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struct nk_text text;
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nk_flags ws = 0;
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enum nk_widget_layout_states widget_state;
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NK_ASSERT(ctx);
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NK_ASSERT(ctx->current);
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NK_ASSERT(ctx->current->layout);
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if (!ctx || !ctx->current || !ctx->current->layout)
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return 0;
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/* cache some data */
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win = ctx->current;
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layout = win->layout;
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out = &win->buffer;
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style = &ctx->style;
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item_spacing = style->window.spacing;
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/* calculate header bounds and draw background */
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row_height = style->font->height + 2 * style->tab.padding.y;
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nk_layout_set_min_row_height(ctx, row_height);
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nk_layout_row_dynamic(ctx, row_height, 1);
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nk_layout_reset_min_row_height(ctx);
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widget_state = nk_widget(&header, ctx);
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if (type == NK_TREE_TAB) {
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const struct nk_style_item *background = &style->tab.background;
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if (background->type == NK_STYLE_ITEM_IMAGE) {
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nk_draw_image(out, header, &background->data.image, nk_white);
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text.background = nk_rgba(0,0,0,0);
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} else {
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text.background = background->data.color;
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nk_fill_rect(out, header, 0, style->tab.border_color);
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nk_fill_rect(out, nk_shrink_rect(header, style->tab.border),
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style->tab.rounding, background->data.color);
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}
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} else text.background = style->window.background;
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/* update node state */
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in = (!(layout->flags & NK_WINDOW_ROM)) ? &ctx->input: 0;
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in = (in && widget_state == NK_WIDGET_VALID) ? &ctx->input : 0;
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if (nk_button_behavior(&ws, header, in, NK_BUTTON_DEFAULT))
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*state = (*state == NK_MAXIMIZED) ? NK_MINIMIZED : NK_MAXIMIZED;
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/* select correct button style */
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if (*state == NK_MAXIMIZED) {
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symbol = style->tab.sym_maximize;
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if (type == NK_TREE_TAB)
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button = &style->tab.tab_maximize_button;
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else button = &style->tab.node_maximize_button;
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} else {
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symbol = style->tab.sym_minimize;
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if (type == NK_TREE_TAB)
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button = &style->tab.tab_minimize_button;
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else button = &style->tab.node_minimize_button;
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}
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{/* draw triangle button */
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sym.w = sym.h = style->font->height;
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sym.y = header.y + style->tab.padding.y;
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sym.x = header.x + style->tab.padding.x;
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nk_do_button_symbol(&ws, &win->buffer, sym, symbol, NK_BUTTON_DEFAULT,
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button, 0, style->font);
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if (img) {
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/* draw optional image icon */
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sym.x = sym.x + sym.w + 4 * item_spacing.x;
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nk_draw_image(&win->buffer, sym, img, nk_white);
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sym.w = style->font->height + style->tab.spacing.x;}
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}
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{/* draw label */
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struct nk_rect label;
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header.w = NK_MAX(header.w, sym.w + item_spacing.x);
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label.x = sym.x + sym.w + item_spacing.x;
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label.y = sym.y;
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label.w = header.w - (sym.w + item_spacing.y + style->tab.indent);
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label.h = style->font->height;
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text.text = style->tab.text;
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text.padding = nk_vec2(0,0);
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nk_widget_text(out, label, title, nk_strlen(title), &text,
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NK_TEXT_LEFT, style->font);}
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/* increase x-axis cursor widget position pointer */
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if (*state == NK_MAXIMIZED) {
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layout->at_x = header.x + (float)*layout->offset_x + style->tab.indent;
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layout->bounds.w = NK_MAX(layout->bounds.w, style->tab.indent);
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layout->bounds.w -= (style->tab.indent + style->window.padding.x);
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layout->row.tree_depth++;
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return nk_true;
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} else return nk_false;
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}
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NK_INTERN int
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nk_tree_base(struct nk_context *ctx, enum nk_tree_type type,
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struct nk_image *img, const char *title, enum nk_collapse_states initial_state,
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const char *hash, int len, int line)
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{
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struct nk_window *win = ctx->current;
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int title_len = 0;
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nk_hash tree_hash = 0;
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nk_uint *state = 0;
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/* retrieve tree state from internal widget state tables */
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if (!hash) {
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title_len = (int)nk_strlen(title);
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tree_hash = nk_murmur_hash(title, (int)title_len, (nk_hash)line);
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} else tree_hash = nk_murmur_hash(hash, len, (nk_hash)line);
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state = nk_find_value(win, tree_hash);
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if (!state) {
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state = nk_add_value(ctx, win, tree_hash, 0);
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*state = initial_state;
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}
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return nk_tree_state_base(ctx, type, img, title, (enum nk_collapse_states*)state);
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}
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NK_API int
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nk_tree_state_push(struct nk_context *ctx, enum nk_tree_type type,
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const char *title, enum nk_collapse_states *state)
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{
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return nk_tree_state_base(ctx, type, 0, title, state);
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}
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NK_API int
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nk_tree_state_image_push(struct nk_context *ctx, enum nk_tree_type type,
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struct nk_image img, const char *title, enum nk_collapse_states *state)
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{
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return nk_tree_state_base(ctx, type, &img, title, state);
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}
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NK_API void
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nk_tree_state_pop(struct nk_context *ctx)
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{
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struct nk_window *win = 0;
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struct nk_panel *layout = 0;
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NK_ASSERT(ctx);
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NK_ASSERT(ctx->current);
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NK_ASSERT(ctx->current->layout);
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if (!ctx || !ctx->current || !ctx->current->layout)
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return;
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win = ctx->current;
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layout = win->layout;
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layout->at_x -= ctx->style.tab.indent + ctx->style.window.padding.x;
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layout->bounds.w += ctx->style.tab.indent + ctx->style.window.padding.x;
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NK_ASSERT(layout->row.tree_depth);
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layout->row.tree_depth--;
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}
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NK_API int
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nk_tree_push_hashed(struct nk_context *ctx, enum nk_tree_type type,
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const char *title, enum nk_collapse_states initial_state,
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const char *hash, int len, int line)
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{
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return nk_tree_base(ctx, type, 0, title, initial_state, hash, len, line);
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}
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NK_API int
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nk_tree_image_push_hashed(struct nk_context *ctx, enum nk_tree_type type,
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struct nk_image img, const char *title, enum nk_collapse_states initial_state,
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const char *hash, int len,int seed)
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{
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return nk_tree_base(ctx, type, &img, title, initial_state, hash, len, seed);
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}
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NK_API void
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nk_tree_pop(struct nk_context *ctx)
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{
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nk_tree_state_pop(ctx);
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}
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NK_INTERN int
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nk_tree_element_image_push_hashed_base(struct nk_context *ctx, enum nk_tree_type type,
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struct nk_image *img, const char *title, int title_len,
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enum nk_collapse_states *state, int *selected)
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{
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struct nk_window *win;
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struct nk_panel *layout;
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const struct nk_style *style;
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struct nk_command_buffer *out;
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const struct nk_input *in;
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const struct nk_style_button *button;
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enum nk_symbol_type symbol;
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float row_height;
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struct nk_vec2 padding;
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int text_len;
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float text_width;
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struct nk_vec2 item_spacing;
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struct nk_rect header = {0,0,0,0};
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struct nk_rect sym = {0,0,0,0};
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struct nk_text text;
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nk_flags ws = 0;
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enum nk_widget_layout_states widget_state;
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NK_ASSERT(ctx);
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NK_ASSERT(ctx->current);
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NK_ASSERT(ctx->current->layout);
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if (!ctx || !ctx->current || !ctx->current->layout)
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return 0;
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/* cache some data */
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win = ctx->current;
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layout = win->layout;
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out = &win->buffer;
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style = &ctx->style;
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item_spacing = style->window.spacing;
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padding = style->selectable.padding;
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/* calculate header bounds and draw background */
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row_height = style->font->height + 2 * style->tab.padding.y;
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nk_layout_set_min_row_height(ctx, row_height);
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nk_layout_row_dynamic(ctx, row_height, 1);
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nk_layout_reset_min_row_height(ctx);
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widget_state = nk_widget(&header, ctx);
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if (type == NK_TREE_TAB) {
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const struct nk_style_item *background = &style->tab.background;
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if (background->type == NK_STYLE_ITEM_IMAGE) {
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nk_draw_image(out, header, &background->data.image, nk_white);
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text.background = nk_rgba(0,0,0,0);
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} else {
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text.background = background->data.color;
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nk_fill_rect(out, header, 0, style->tab.border_color);
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nk_fill_rect(out, nk_shrink_rect(header, style->tab.border),
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style->tab.rounding, background->data.color);
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}
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} else text.background = style->window.background;
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in = (!(layout->flags & NK_WINDOW_ROM)) ? &ctx->input: 0;
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in = (in && widget_state == NK_WIDGET_VALID) ? &ctx->input : 0;
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/* select correct button style */
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if (*state == NK_MAXIMIZED) {
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symbol = style->tab.sym_maximize;
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if (type == NK_TREE_TAB)
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button = &style->tab.tab_maximize_button;
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else button = &style->tab.node_maximize_button;
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} else {
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symbol = style->tab.sym_minimize;
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if (type == NK_TREE_TAB)
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button = &style->tab.tab_minimize_button;
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else button = &style->tab.node_minimize_button;
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}
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{/* draw triangle button */
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sym.w = sym.h = style->font->height;
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sym.y = header.y + style->tab.padding.y;
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sym.x = header.x + style->tab.padding.x;
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if (nk_do_button_symbol(&ws, &win->buffer, sym, symbol, NK_BUTTON_DEFAULT, button, in, style->font))
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*state = (*state == NK_MAXIMIZED) ? NK_MINIMIZED : NK_MAXIMIZED;}
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/* draw label */
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{nk_flags dummy = 0;
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struct nk_rect label;
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/* calculate size of the text and tooltip */
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text_len = nk_strlen(title);
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text_width = style->font->width(style->font->userdata, style->font->height, title, text_len);
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text_width += (4 * padding.x);
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header.w = NK_MAX(header.w, sym.w + item_spacing.x);
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label.x = sym.x + sym.w + item_spacing.x;
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label.y = sym.y;
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label.w = NK_MIN(header.w - (sym.w + item_spacing.y + style->tab.indent), text_width);
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label.h = style->font->height;
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if (img) {
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nk_do_selectable_image(&dummy, &win->buffer, label, title, title_len, NK_TEXT_LEFT,
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selected, img, &style->selectable, in, style->font);
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} else nk_do_selectable(&dummy, &win->buffer, label, title, title_len, NK_TEXT_LEFT,
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selected, &style->selectable, in, style->font);
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}
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/* increase x-axis cursor widget position pointer */
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if (*state == NK_MAXIMIZED) {
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layout->at_x = header.x + (float)*layout->offset_x + style->tab.indent;
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layout->bounds.w = NK_MAX(layout->bounds.w, style->tab.indent);
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layout->bounds.w -= (style->tab.indent + style->window.padding.x);
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layout->row.tree_depth++;
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return nk_true;
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} else return nk_false;
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}
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NK_INTERN int
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nk_tree_element_base(struct nk_context *ctx, enum nk_tree_type type,
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struct nk_image *img, const char *title, enum nk_collapse_states initial_state,
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int *selected, const char *hash, int len, int line)
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{
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struct nk_window *win = ctx->current;
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int title_len = 0;
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nk_hash tree_hash = 0;
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nk_uint *state = 0;
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/* retrieve tree state from internal widget state tables */
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if (!hash) {
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title_len = (int)nk_strlen(title);
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tree_hash = nk_murmur_hash(title, (int)title_len, (nk_hash)line);
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} else tree_hash = nk_murmur_hash(hash, len, (nk_hash)line);
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state = nk_find_value(win, tree_hash);
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if (!state) {
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state = nk_add_value(ctx, win, tree_hash, 0);
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*state = initial_state;
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} return nk_tree_element_image_push_hashed_base(ctx, type, img, title,
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nk_strlen(title), (enum nk_collapse_states*)state, selected);
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}
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NK_API int
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nk_tree_element_push_hashed(struct nk_context *ctx, enum nk_tree_type type,
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const char *title, enum nk_collapse_states initial_state,
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int *selected, const char *hash, int len, int seed)
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{
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return nk_tree_element_base(ctx, type, 0, title, initial_state, selected, hash, len, seed);
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}
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NK_API int
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nk_tree_element_image_push_hashed(struct nk_context *ctx, enum nk_tree_type type,
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struct nk_image img, const char *title, enum nk_collapse_states initial_state,
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int *selected, const char *hash, int len,int seed)
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{
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return nk_tree_element_base(ctx, type, &img, title, initial_state, selected, hash, len, seed);
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}
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NK_API void
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nk_tree_element_pop(struct nk_context *ctx)
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{
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nk_tree_state_pop(ctx);
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}
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