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static void node_switch_to_tab(Ted *ted, Node *node, u16 new_tab_index) {
node->active_tab = new_tab_index;
if (node == ted->active_node) {
// switch active buffer
assert(node->tabs);
u16 buffer_idx = node->tabs[new_tab_index];
ted->active_buffer = &ted->buffers[buffer_idx];
}
}
// move n tabs to the right
static void node_tab_next(Ted *ted, Node *node, i64 n) {
assert(node->tabs);
u16 ntabs = (u16)arr_len(node->tabs);
u16 tab_idx = (u16)mod_i64(node->active_tab + n, ntabs);
node_switch_to_tab(ted, node, tab_idx);
}
static void node_tab_prev(Ted *ted, Node *node, i64 n) {
node_tab_next(ted, node, -n);
}
static void node_frame(Ted *ted, Node *node, Rect r) {
if (node->tabs) {
bool is_active = node == ted->active_node;
Settings const *settings = &ted->settings;
u32 const *colors = settings->colors;
Font *font = ted->font;
u16 buffer_index = node->tabs[node->active_tab];
float tab_bar_height = 20;
Rect tab_bar_rect = r;
tab_bar_rect.size.y = tab_bar_height;
{ // tab bar
u16 ntabs = (u16)arr_len(node->tabs);
float tab_width = r.size.x / ntabs;
for (u16 c = 0; c < ted->nmouse_clicks[SDL_BUTTON_LEFT]; ++c) {
v2 click = ted->mouse_clicks[SDL_BUTTON_LEFT][c];
if (rect_contains_point(tab_bar_rect, click)) {
u16 tab_index = (u16)((click.x - r.pos.x) / tab_width);
node_switch_to_tab(ted, node, tab_index);
}
}
for (u16 i = 0; i < ntabs; ++i) {
TextBuffer *buffer = &ted->buffers[node->tabs[i]];
char tab_title[256];
char const *path = buffer_get_filename(buffer);
char const *filename = path_filename(path);
Rect tab_rect = rect(V2(r.pos.x + tab_width * i, r.pos.y), V2(tab_width, tab_bar_height));
glBegin(GL_QUADS);
gl_color_rgba(colors[COLOR_BORDER]);
// tab border
rect_render_border(tab_rect, 1);
if (i == node->active_tab) {
// highlight active tab
gl_color_rgba(colors[is_active ? COLOR_ACTIVE_TAB_HL : COLOR_HL]);
rect_render(tab_rect);
}
glEnd();
// tab title
{
char const *surround = buffer_unsaved_changes(buffer) ? "*" : "";
strbuf_printf(tab_title, "%s%s%s", surround, filename, surround);
}
gl_color_rgba(colors[COLOR_TEXT]);
TextRenderState text_state = text_render_state_default;
text_state.max_x = rect_x2(tab_rect);
text_render_with_state(font, &text_state, tab_title, tab_rect.pos.x, tab_rect.pos.y);
}
}
TextBuffer *buffer = &ted->buffers[buffer_index];
Rect buffer_rect = rect_translate(r, V2(0, tab_bar_height));
buffer_render(buffer, buffer_rect);
} else {
#if 0
// @TODO: test this
// this node is a split
Node *a = &ted->nodes[node->split_a];
Node *b = &ted->nodes[node->split_b];
Rect r1 = r, r2 = r;
if (node->vertical_split) {
float split_pos = r.size.y * node->split_pos;
r1.size.y = split_pos;
r2.pos.y += split_pos;
r2.size.y = r.size.y - split_pos;
} else {
float split_pos = r.size.x * node->split_pos;
r1.size.x = split_pos;
r2.pos.x += split_pos;
r2.size.x = r.size.x - split_pos;
}
node_render(ted, a, r1);
node_render(ted, b, r2);
#endif
}
}
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