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Basics of lister scrolling in place

This commit is contained in:
Allen Webster 2019-10-13 22:43:31 -07:00
parent 13cda93f55
commit c8a4b7e20a
2 changed files with 31 additions and 6 deletions
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10
custom/4coder_base_types.cpp
View File

@ -1544,6 +1544,16 @@ unlerp(f32 a, f32 x, f32 b){
return(r);
}
internal f32
lerp(Range_f32 range, f32 t){
return(lerp(range.min, t, range.max));
}
internal f32
clamp_range(Range_f32 range, f32 x){
return(clamp(range.min, x, range.max));
}
////////////////////////////////
internal b32

27
custom/4coder_lister_base.cpp
View File

@ -77,8 +77,6 @@ lister_render(Application_Links *app, View_ID view, Frame_Info frame_info, Rect_
return;
}
Basic_Scroll scroll = lister->data.scroll;
(void)scroll;
Rect_f32 region = view_get_screen_rect(app, view);
// TODO(allen): eliminate this. bad bad bad bad :(
region = rect_inner(region, 3.f);
@ -106,10 +104,25 @@ lister_render(Application_Links *app, View_ID view, Frame_Info frame_info, Rect_
}
Range_f32 x = rect_range_x(layout.list_rect);
f32 y_pos = layout.list_rect.y0;
Rect_f32 prev_clip = draw_set_clip(app, layout.list_rect);
i32 count = lister->data.filtered.count;
for (i32 i = 0; i < count; i += 1){
Range_f32 scroll_range = If32(0.f, clamp_bot(0.f, count*block_height - block_height));
lister->data.scroll.position.y = clamp_range(scroll_range, lister->data.scroll.position.y);
lister->data.scroll.position.x = 0.f;
lister->data.scroll.target.y = clamp_range(scroll_range, lister->data.scroll.target.y);
lister->data.scroll.target.x = 0.f;
// TODO(allen): get scroll rule from context
lister->data.scroll.position = lister->data.scroll.target;
f32 scroll_y = lister->data.scroll.position.y;
f32 y_pos = layout.list_rect.y0 - scroll_y;
i32 first_index = (i32)(scroll_y/block_height);
y_pos += first_index*block_height;
for (i32 i = first_index; i < count; i += 1){
Lister_Node *node = lister->data.filtered.node_ptrs[i];
Range_f32 y = If32(y_pos, y_pos + block_height);
@ -135,8 +148,8 @@ lister_render(Application_Links *app, View_ID view, Frame_Info frame_info, Rect_
highlight = UIHighlight_Hover;
}
draw_rectangle(app, item_rect, 3.f, get_margin_color(highlight));
draw_rectangle(app, item_inner, 3.f, Stag_Back);
draw_rectangle(app, item_rect, 6.f, get_margin_color(highlight));
draw_rectangle(app, item_inner, 6.f, Stag_Back);
Fancy_String_List line = {};
push_fancy_string(scratch, &line, fancy_id(Stag_Default), node->string);
@ -146,6 +159,8 @@ lister_render(Application_Links *app, View_ID view, Frame_Info frame_info, Rect_
Vec2_f32 p = V2f32(item_inner.x0 + 3.f, item_inner.y0 + (block_height - line_height)*0.5f);
draw_fancy_string(app, face_id, line.first, p, Stag_Default, 0, 0, V2(1.f, 0.f));
}
draw_set_clip(app, prev_clip);
}
function void*