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added scroll bar to tim_scroll

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Timerix
2026-01-14 22:11:18 +05:00
parent 2a685dfcd0
commit f650e568d6
2 changed files with 50 additions and 14 deletions
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2
include/tim.h
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@@ -181,6 +181,8 @@ typedef struct TimScrollState {
TimScrollItem* items; TimScrollItem* items;
u32 len; u32 len;
u32 cur; u32 cur;
bool draw_border;
bool show_scroll_bar_horizontal;
bool use_mouse_wheel; bool use_mouse_wheel;
} TimScrollState; } TimScrollState;

52
src/scroll.c
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@@ -1,4 +1,5 @@
#include "tim.h" #include "tim.h"
#include <math.h>
void TimScrollState_selectNext(TimScrollState* l){ void TimScrollState_selectNext(TimScrollState* l){
l->cur = (l->cur + 1) % l->len; l->cur = (l->cur + 1) % l->len;
@@ -9,7 +10,7 @@ void TimScrollState_selectPrev(TimScrollState* l){
} }
TimScrollItem* tim_scroll(TimScrollState* l, i32 x, i32 y, i32 w, i32 h, TimStyle style){ TimScrollItem* tim_scroll(TimScrollState* l, i32 x, i32 y, i32 w, i32 h, TimStyle style){
// select with buttons and mouse wheel // select row with keyboard and mouse wheel
if(tim_is_key_press(TimKey_Down) if(tim_is_key_press(TimKey_Down)
|| (l->use_mouse_wheel && tim_is_mouse_scroll_down())) || (l->use_mouse_wheel && tim_is_mouse_scroll_down()))
{ {
@@ -23,22 +24,55 @@ TimScrollItem* tim_scroll(TimScrollState* l, i32 x, i32 y, i32 w, i32 h, TimStyl
tim->focus = l->items[l->cur].focus_target; tim->focus = l->items[l->cur].focus_target;
tim_frame(x, y, w, h, style); tim_scope(x, y, w, h)
{
TimRect items_scope = tim->scopes[tim->scope];
TimRect absolute = tim_scope_rect_to_absolute(x, y, w, h); // draw border and shrink items_scope
TimRect place = { .x = x + 1, .y = y + 1, .w = absolute.w - 2, .h = absolute.h - 2 }; if(l->draw_border){
tim_frame(0, 0, ~0, ~0, style);
items_scope.x += 1;
items_scope.y += 1;
items_scope.w -= 2;
items_scope.h -= 2;
}
// draw scroll bar and shrink items_scope
if(l->show_scroll_bar_horizontal){
items_scope.w -= 1;
i32 scrollbar_x = items_scope.x + items_scope.w;
i32 scrollbar_y = items_scope.y;
i32 scrollbar_h = items_scope.h - 2;
f32 slider_y_normalized = 0;
i32 slider_h = 0;
if(l->len != 0){
slider_y_normalized = (f32)l->cur / l->len + 0.001f;
slider_h = ceilf((f32)scrollbar_h / l->len);
}
i32 slider_y = scrollbar_y + 1 + scrollbar_h * slider_y_normalized;
tim_draw_chr(tim_cell("▲", style.brd, style.bg), scrollbar_x, scrollbar_y);
tim_draw_col(tim_cell("░", style.brd, style.bg), scrollbar_x, scrollbar_y + 1, scrollbar_h);
tim_draw_col(tim_cell("█", style.brd, style.bg), scrollbar_x, slider_y, slider_h);
tim_draw_chr(tim_cell("▼", style.brd, style.bg), scrollbar_x, scrollbar_y + scrollbar_h + 1);
}
tim->scopes[tim->scope] = items_scope; // fit current scope inside frame and scrollbar
// draw items
TimRect item_place = { .x = 0, .y = 0, .w = items_scope.w, .h = 0 };
for(u32 i = 0; i < l->len; i++){ for(u32 i = 0; i < l->len; i++){
TimScrollItem* item = &l->items[i]; TimScrollItem* item = &l->items[i];
place.h = item->h; item_place.h = item->h;
// select with mouse click // select row with mouse click
if(tim_is_mouse_click_over(tim_scope_rect_to_absolute(place.x, place.y, place.w, place.h))){ if(tim_is_mouse_click_over(tim_scope_rect_to_absolute(item_place.x, item_place.y, item_place.w, item_place.h))){
l->cur = i; l->cur = i;
tim->focus = item->focus_target; tim->focus = item->focus_target;
} }
item->draw(i == l->cur, place, item->data); item->draw(i == l->cur, item_place, item->data);
place.y += place.h; item_place.y += item_place.h;
}
} }
return &l->items[l->cur]; return &l->items[l->cur];