237 lines
7.2 KiB
C
237 lines
7.2 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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* GROUP
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*
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* ===============================================================*/
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NK_API nk_bool
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nk_group_scrolled_offset_begin(struct nk_context *ctx,
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nk_uint *x_offset, nk_uint *y_offset, const char *title, nk_flags flags)
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{
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struct nk_rect bounds;
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struct nk_window panel;
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struct nk_window *win;
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win = ctx->current;
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nk_panel_alloc_space(&bounds, ctx);
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{const struct nk_rect *c = &win->layout->clip;
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if (!NK_INTERSECT(c->x, c->y, c->w, c->h, bounds.x, bounds.y, bounds.w, bounds.h) &&
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!(flags & NK_WINDOW_MOVABLE)) {
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return 0;
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}}
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if (win->flags & NK_WINDOW_ROM)
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flags |= NK_WINDOW_ROM;
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/* initialize a fake window to create the panel from */
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nk_zero(&panel, sizeof(panel));
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panel.bounds = bounds;
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panel.flags = flags;
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panel.scrollbar.x = *x_offset;
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panel.scrollbar.y = *y_offset;
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panel.buffer = win->buffer;
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panel.layout = (struct nk_panel*)nk_create_panel(ctx);
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ctx->current = &panel;
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nk_panel_begin(ctx, (flags & NK_WINDOW_TITLE) ? title: 0, NK_PANEL_GROUP);
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win->buffer = panel.buffer;
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win->buffer.clip = panel.layout->clip;
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panel.layout->offset_x = x_offset;
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panel.layout->offset_y = y_offset;
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panel.layout->parent = win->layout;
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win->layout = panel.layout;
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ctx->current = win;
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if ((panel.layout->flags & NK_WINDOW_CLOSED) ||
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(panel.layout->flags & NK_WINDOW_MINIMIZED))
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{
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nk_flags f = panel.layout->flags;
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nk_group_scrolled_end(ctx);
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if (f & NK_WINDOW_CLOSED)
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return NK_WINDOW_CLOSED;
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if (f & NK_WINDOW_MINIMIZED)
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return NK_WINDOW_MINIMIZED;
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}
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return 1;
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}
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NK_API void
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nk_group_scrolled_end(struct nk_context *ctx)
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{
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struct nk_window *win;
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struct nk_panel *parent;
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struct nk_panel *g;
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struct nk_rect clip;
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struct nk_window pan;
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struct nk_vec2 panel_padding;
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NK_ASSERT(ctx);
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NK_ASSERT(ctx->current);
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if (!ctx || !ctx->current)
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return;
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/* make sure nk_group_begin was called correctly */
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NK_ASSERT(ctx->current);
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win = ctx->current;
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NK_ASSERT(win->layout);
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g = win->layout;
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NK_ASSERT(g->parent);
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parent = g->parent;
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/* dummy window */
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nk_zero_struct(pan);
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panel_padding = nk_panel_get_padding(&ctx->style, NK_PANEL_GROUP);
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pan.bounds.y = g->bounds.y - (g->header_height + g->menu.h);
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pan.bounds.x = g->bounds.x - panel_padding.x;
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pan.bounds.w = g->bounds.w + 2 * panel_padding.x;
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pan.bounds.h = g->bounds.h + g->header_height + g->menu.h;
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if (g->flags & NK_WINDOW_BORDER) {
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pan.bounds.x -= g->border;
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pan.bounds.y -= g->border;
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pan.bounds.w += 2*g->border;
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pan.bounds.h += 2*g->border;
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}
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if (!(g->flags & NK_WINDOW_NO_SCROLLBAR)) {
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pan.bounds.w += ctx->style.window.scrollbar_size.x;
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pan.bounds.h += ctx->style.window.scrollbar_size.y;
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}
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pan.scrollbar.x = *g->offset_x;
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pan.scrollbar.y = *g->offset_y;
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pan.flags = g->flags;
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pan.buffer = win->buffer;
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pan.layout = g;
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pan.parent = win;
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ctx->current = &pan;
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/* make sure group has correct clipping rectangle */
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nk_unify(&clip, &parent->clip, pan.bounds.x, pan.bounds.y,
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pan.bounds.x + pan.bounds.w, pan.bounds.y + pan.bounds.h + panel_padding.x);
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nk_push_scissor(&pan.buffer, clip);
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nk_end(ctx);
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win->buffer = pan.buffer;
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nk_push_scissor(&win->buffer, parent->clip);
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ctx->current = win;
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win->layout = parent;
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g->bounds = pan.bounds;
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return;
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}
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NK_API nk_bool
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nk_group_scrolled_begin(struct nk_context *ctx,
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struct nk_scroll *scroll, const char *title, nk_flags flags)
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{
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return nk_group_scrolled_offset_begin(ctx, &scroll->x, &scroll->y, title, flags);
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}
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NK_API nk_bool
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nk_group_begin_titled(struct nk_context *ctx, const char *id,
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const char *title, nk_flags flags)
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{
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int id_len;
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nk_hash id_hash;
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struct nk_window *win;
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nk_uint *x_offset;
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nk_uint *y_offset;
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NK_ASSERT(ctx);
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NK_ASSERT(id);
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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 || !id)
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return 0;
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/* find persistent group scrollbar value */
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win = ctx->current;
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id_len = (int)nk_strlen(id);
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id_hash = nk_murmur_hash(id, (int)id_len, NK_PANEL_GROUP);
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x_offset = nk_find_value(win, id_hash);
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if (!x_offset) {
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x_offset = nk_add_value(ctx, win, id_hash, 0);
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y_offset = nk_add_value(ctx, win, id_hash+1, 0);
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NK_ASSERT(x_offset);
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NK_ASSERT(y_offset);
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if (!x_offset || !y_offset) return 0;
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*x_offset = *y_offset = 0;
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} else y_offset = nk_find_value(win, id_hash+1);
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return nk_group_scrolled_offset_begin(ctx, x_offset, y_offset, title, flags);
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}
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NK_API nk_bool
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nk_group_begin(struct nk_context *ctx, const char *title, nk_flags flags)
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{
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return nk_group_begin_titled(ctx, title, title, flags);
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}
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NK_API void
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nk_group_end(struct nk_context *ctx)
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{
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nk_group_scrolled_end(ctx);
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}
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NK_API void
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nk_group_get_scroll(struct nk_context *ctx, const char *id, nk_uint *x_offset, nk_uint *y_offset)
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{
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int id_len;
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nk_hash id_hash;
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struct nk_window *win;
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nk_uint *x_offset_ptr;
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nk_uint *y_offset_ptr;
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NK_ASSERT(ctx);
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NK_ASSERT(id);
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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 || !id)
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return;
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/* find persistent group scrollbar value */
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win = ctx->current;
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id_len = (int)nk_strlen(id);
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id_hash = nk_murmur_hash(id, (int)id_len, NK_PANEL_GROUP);
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x_offset_ptr = nk_find_value(win, id_hash);
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if (!x_offset_ptr) {
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x_offset_ptr = nk_add_value(ctx, win, id_hash, 0);
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y_offset_ptr = nk_add_value(ctx, win, id_hash+1, 0);
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NK_ASSERT(x_offset_ptr);
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NK_ASSERT(y_offset_ptr);
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if (!x_offset_ptr || !y_offset_ptr) return;
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*x_offset_ptr = *y_offset_ptr = 0;
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} else y_offset_ptr = nk_find_value(win, id_hash+1);
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if (x_offset)
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*x_offset = *x_offset_ptr;
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if (y_offset)
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*y_offset = *y_offset_ptr;
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}
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NK_API void
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nk_group_set_scroll(struct nk_context *ctx, const char *id, nk_uint x_offset, nk_uint y_offset)
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{
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int id_len;
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nk_hash id_hash;
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struct nk_window *win;
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nk_uint *x_offset_ptr;
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nk_uint *y_offset_ptr;
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NK_ASSERT(ctx);
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NK_ASSERT(id);
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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 || !id)
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return;
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/* find persistent group scrollbar value */
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win = ctx->current;
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id_len = (int)nk_strlen(id);
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id_hash = nk_murmur_hash(id, (int)id_len, NK_PANEL_GROUP);
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x_offset_ptr = nk_find_value(win, id_hash);
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if (!x_offset_ptr) {
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x_offset_ptr = nk_add_value(ctx, win, id_hash, 0);
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y_offset_ptr = nk_add_value(ctx, win, id_hash+1, 0);
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NK_ASSERT(x_offset_ptr);
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NK_ASSERT(y_offset_ptr);
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if (!x_offset_ptr || !y_offset_ptr) return;
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*x_offset_ptr = *y_offset_ptr = 0;
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} else y_offset_ptr = nk_find_value(win, id_hash+1);
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*x_offset_ptr = x_offset;
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*y_offset_ptr = y_offset;
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}
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