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scroll system a little less sucky

This commit is contained in:
Allen Webster 2016-04-02 15:35:33 -04:00
parent 9402e2a213
commit 3b17899d8e
3 changed files with 257 additions and 189 deletions
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27
4ed.cpp
View File

@ -422,9 +422,9 @@ COMMAND_DECL(center_view){
h = view_file_height(view);
y -= h * .5f;
if (y < view->scroll_min_limit) y = view->scroll_min_limit;
if (y < view->file_scroll.min_y) y = view->file_scroll.min_y;
view->target_y = y;
view->file_scroll.target_y = y;
}
COMMAND_DECL(word_complete){
@ -1076,9 +1076,9 @@ COMMAND_DECL(toggle_line_wrap){
if (view->unwrapped_lines){
view->unwrapped_lines = 0;
file->settings.unwrapped_lines = 0;
view->target_x = 0;
view->cursor =
view_compute_cursor_from_pos(view, view->cursor.pos);
view->file_scroll.target_x = 0;
view->cursor =view_compute_cursor_from_pos(
view, view->cursor.pos);
view->preferred_x = view->cursor.wrapped_x;
}
else{
@ -1484,13 +1484,13 @@ COMMAND_DECL(page_down){
REQ_READABLE_VIEW(view);
f32 height = view_file_height(view);
f32 max_target_y = view_compute_max_target_y(view);
f32 max_target_y = view->file_scroll.max_y;
view->target_y += height;
if (view->target_y > max_target_y) view->target_y = max_target_y;
view->file_scroll.target_y += height;
if (view->file_scroll.target_y > max_target_y) view->file_scroll.target_y = max_target_y;
view->cursor = view_compute_cursor_from_xy(
view, 0, view->target_y + (height - view->font_height)*.5f);
view, 0, view->file_scroll.target_y + (height - view->font_height)*.5f);
}
COMMAND_DECL(page_up){
@ -1498,12 +1498,13 @@ COMMAND_DECL(page_up){
REQ_READABLE_VIEW(view);
f32 height = view_file_height(view);
f32 min_target_y = view->file_scroll.min_y;
view->target_y -= height;
if (view->target_y < 0) view->target_y = 0;
view->file_scroll.target_y -= height;
if (view->file_scroll.target_y < min_target_y) view->file_scroll.target_y = min_target_y;
view->cursor = view_compute_cursor_from_xy(
view, 0, view->target_y + (height - view->font_height)*.5f);
view, 0, view->file_scroll.target_y + (height - view->font_height)*.5f);
}
COMMAND_DECL(open_color_tweaker){
@ -1593,7 +1594,7 @@ COMMAND_DECL(set_settings){
if (!file->state.is_loading){
Relative_Scrolling scrolling = view_get_relative_scrolling(view);
view->target_x = 0;
view->file_scroll.target_x = 0;
view->cursor =
view_compute_cursor_from_pos(view, view->cursor.pos);
view_set_relative_scrolling(view, scrolling);

287
4ed_file_view.cpp
View File

@ -75,11 +75,11 @@ struct View{
Command_Map *map;
Editing_File *file;
i32_Rect file_rect;
View_UI showing_ui;
GUI_Target gui_target;
void *gui_mem;
GUI_Scroll_Vars gui_scroll;
Interactive_Interaction interaction;
Interactive_Action action;
@ -110,11 +110,10 @@ struct View{
Full_Cursor cursor;
i32 mark;
f32 scroll_y, target_y, prev_target_y;
f32 scroll_x, target_x, prev_target_x;
f32 preferred_x;
i32 scroll_i;
f32 scroll_min_limit;
GUI_Scroll_Vars file_scroll;
Full_Cursor temp_highlight;
i32 temp_highlight_end_pos;
@ -156,14 +155,14 @@ view_lock_level(View *view){
inline f32
view_file_width(View *view){
i32_Rect file_rect = view->file_rect;
i32_Rect file_rect = view->file_scroll.region;
f32 result = (f32)(file_rect.x1 - file_rect.x0);
return (result);
}
inline f32
view_file_height(View *view){
i32_Rect file_rect = view->file_rect;
i32_Rect file_rect = view->file_scroll.region;
f32 result = (f32)(file_rect.y1 - file_rect.y0);
return (result);
}
@ -1332,19 +1331,19 @@ view_get_relative_scrolling(View *view){
Relative_Scrolling result;
f32 cursor_y;
cursor_y = view_get_cursor_y(view);
result.scroll_y = cursor_y - view->scroll_y;
result.target_y = cursor_y - view->target_y;
result.scroll_min_limit = view->scroll_min_limit;
return result;
result.scroll_y = cursor_y - view->file_scroll.scroll_y;
result.target_y = cursor_y - view->file_scroll.target_y;
result.scroll_min_limit = view->file_scroll.min_y;
return(result);
}
internal void
view_set_relative_scrolling(View *view, Relative_Scrolling scrolling){
f32 cursor_y;
cursor_y = view_get_cursor_y(view);
view->scroll_y = cursor_y - scrolling.scroll_y;
view->target_y = cursor_y - scrolling.target_y;
if (view->target_y < scrolling.scroll_min_limit) view->target_y = scrolling.scroll_min_limit;
view->file_scroll.scroll_y = cursor_y - scrolling.scroll_y;
view->file_scroll.target_y = cursor_y - scrolling.target_y;
if (view->file_scroll.target_y < scrolling.scroll_min_limit) view->file_scroll.target_y = scrolling.scroll_min_limit;
}
inline void
@ -1638,17 +1637,17 @@ file_edit_cursor_fix(System_Functions *system,
if (view->scroll_i != new_scroll_i){
view->scroll_i = new_scroll_i;
temp_cursor = view_compute_cursor_from_pos(view, view->scroll_i);
y_offset = MOD(view->scroll_y, view->font_height);
y_offset = MOD(view->file_scroll.scroll_y, view->font_height);
if (view->unwrapped_lines){
y_position = temp_cursor.unwrapped_y + y_offset;
view->target_y += (y_position - view->scroll_y);
view->scroll_y = y_position;
view->file_scroll.target_y += (y_position - view->file_scroll.scroll_y);
view->file_scroll.scroll_y = y_position;
}
else{
y_position = temp_cursor.wrapped_y + y_offset;
view->target_y += (y_position - view->scroll_y);
view->scroll_y = y_position;
view->file_scroll.target_y += (y_position - view->file_scroll.scroll_y);
view->file_scroll.scroll_y = y_position;
}
}
}
@ -2654,6 +2653,7 @@ view_show_interactive(System_Functions *system, View *view,
Models *models = view->models;
view->showing_ui = VUI_Interactive;
view->gui_scroll = {0};
view->action = action;
view->interaction = interaction;
@ -2683,23 +2683,6 @@ interactive_view_complete(View *view, String dest, i32 user_action){
Editing_File *old_file = view->file;
switch (view->action){
#if 0
case IAct_Open:
delayed_open(&models->delay1, models->hot_directory.string, panel);
delayed_touch_file(&models->delay1, old_file);
break;
case IAct_Save_As:
delayed_save_as(&models->delay1, models->hot_directory.string, panel);
break;
case IAct_New:
if (models->hot_directory.string.size > 0 &&
!char_is_slash(models->hot_directory.string.str[models->hot_directory.string.size-1])){
delayed_new(&models->delay1, models->hot_directory.string, panel);
}break;
#endif
case IAct_Open:
delayed_open(&models->delay1, dest, panel);
delayed_touch_file(&models->delay1, old_file);
@ -3435,6 +3418,7 @@ intbar_draw_string(Render_Target *target, File_Bar *bar, String str, u32 char_co
bar->pos_x += font_string_width(target, font_id, str);
}
// TODO(allen): wtf is this?
internal void
view_reinit_scrolling(View *view){
Editing_File *file = view->file;
@ -3459,47 +3443,57 @@ view_reinit_scrolling(View *view){
}
target_y = (f32)FLOOR32(cursor_y - h*.5f);
if (target_y < view->scroll_min_limit) target_y = view->scroll_min_limit;
if (target_y < view->file_scroll.min_y) target_y = view->file_scroll.min_y;
}
view->target_x = target_x;
view->target_y = target_y;
view->scroll_x = target_x;
view->scroll_y = target_y;
view->prev_target_x = -1000.f;
view->prev_target_y = -1000.f;
view->file_scroll.target_y = target_y;
view->file_scroll.scroll_y = target_y;
view->file_scroll.prev_target_y = -1000.f;
view->file_scroll.target_x = target_x;
view->file_scroll.scroll_x = target_x;
view->file_scroll.prev_target_x = -1000.f;
}
#define CursorMaxY_(m,h) ((m) - (h)*3)
#define CursorMinY_(m,h) (-(m) + (h)*2)
#define CursorMaxY(m,h) (CursorMaxY_(m,h) > 0)?(CursorMaxY_(m,h)):(0)
#define CursorMinY(m,h) (CursorMinY_(m,h) > 0)?(CursorMinY_(m,h)):(0)
internal i32
file_step(View *view, i32_Rect region, Input_Summary *user_input, b32 is_active){
i32 result = 0;
Editing_File *file = view->file;
if (file && !file->state.is_loading){
// TODO(allen): rewrite with real scrolling system now.
f32 line_height = (f32)view->font_height;
f32 cursor_y = view_get_cursor_y(view);
f32 target_y = view->target_y;
i32 lowest_line = view_compute_lowest_line(view);
f32 delta_y = 3.f*line_height;
f32 max_y = view_file_height(view);
f32 cursor_y = view_get_cursor_y(view);
f32 max_visible_y = view_file_height(view);
f32 max_x = view_file_width(view);
f32 max_target_y = view_compute_max_target_y(lowest_line, (i32)line_height, max_y);
f32 cursor_max_y = max_y - view->font_height * 3;
f32 cursor_x = view_get_cursor_x(view);
GUI_Scroll_Vars scroll_vars = view->gui_target.scroll_original;
f32 target_y = scroll_vars.target_y;
f32 target_x = scroll_vars.target_x;
f32 cursor_max_y = CursorMaxY(max_visible_y, line_height);
f32 cursor_min_y = CursorMinY(scroll_vars.min_y, line_height);
if (cursor_y > target_y + cursor_max_y){
target_y = cursor_y - cursor_max_y + delta_y;
}
if (cursor_y < target_y - view->scroll_min_limit){
target_y = cursor_y - delta_y + view->scroll_min_limit;
if (cursor_y < target_y + cursor_min_y){
target_y = cursor_y - delta_y - cursor_min_y;
}
if (target_y > max_target_y) target_y = max_target_y;
if (target_y < view->scroll_min_limit) target_y = view->scroll_min_limit;
view->target_y = target_y;
if (target_y > scroll_vars.max_y) target_y = scroll_vars.max_y;
if (target_y < scroll_vars.min_y) target_y = view->file_scroll.min_y;
f32 cursor_x = view_get_cursor_x(view);
f32 target_x = view->target_x;
if (cursor_x < target_x){
target_x = (f32)Max(0, cursor_x - max_x/2);
}
@ -3507,22 +3501,12 @@ file_step(View *view, i32_Rect region, Input_Summary *user_input, b32 is_active)
target_x = (f32)(cursor_x - max_x/2);
}
view->target_x = target_x;
b32 is_new_target = 0;
if (view->target_x != view->prev_target_x) is_new_target = 1;
if (view->target_y != view->prev_target_y) is_new_target = 1;
if (view->models->scroll_rule(
view->target_x, view->target_y,
&view->scroll_x, &view->scroll_y,
(view->id) + 1, is_new_target)){
result = 1;
if (target_x != scroll_vars.target_x || target_y != scroll_vars.target_y){
view->gui_target.scroll_updated.target_x = target_x;
view->gui_target.scroll_updated.target_y = target_y;
gui_activate_scrolling(&view->gui_target);
}
view->prev_target_x = view->target_x;
view->prev_target_y = view->target_y;
if (file->state.paste_effect.tick_down > 0){
--file->state.paste_effect.tick_down;
result = 1;
@ -3532,10 +3516,10 @@ file_step(View *view, i32_Rect region, Input_Summary *user_input, b32 is_active)
f32 rx = (f32)(user_input->mouse.x - region.x0);
f32 ry = (f32)(user_input->mouse.y - region.y0);
if (ry >= -view->scroll_min_limit){
if (ry >= -view->file_scroll.min_y){
view_set_widget(view, FWIDG_NONE);
if (rx >= 0 && rx < max_x && ry >= 0 && ry < max_y){
view_cursor_move(view, rx + view->scroll_x, ry + view->scroll_y, 1);
if (rx >= 0 && rx < max_x && ry >= 0 && ry < max_visible_y){
view_cursor_move(view, rx + scroll_vars.scroll_x, ry + scroll_vars.scroll_y, 1);
view->mode = {};
}
}
@ -3551,7 +3535,6 @@ internal void
view_do_queries(View *view, GUI_Target *target){
Query_Slot *slot;
Query_Bar *bar;
for (slot = view->query_set.used_slot; slot != 0; slot = slot->next){
bar = slot->query_bar;
gui_do_text_field(target, bar->prompt, bar->string);
@ -3561,9 +3544,7 @@ view_do_queries(View *view, GUI_Target *target){
internal void
do_widget(View *view, GUI_Target *target){
gui_begin_serial_section(target);
{
view_do_queries(view, target);
}
gui_end_serial_section(target);
}
@ -3572,12 +3553,8 @@ step_file_view(System_Functions *system, View *view, b32 is_active){
GUI_Target *target = &view->gui_target;
Models *models = view->models;
f32 max_y = view_file_height(view);
i32 lowest_line = view_compute_lowest_line(view);
f32 min_target_y = view->scroll_min_limit;
f32 max_target_y = view_compute_max_target_y(lowest_line, view->font_height, max_y);
f32 min_target_y = view->file_scroll.min_y;
f32 max_target_y = view->file_scroll.max_y;
gui_begin_top_level(target);
{
@ -3589,26 +3566,22 @@ step_file_view(System_Functions *system, View *view, b32 is_active){
gui_begin_serial_section(target);
{
i32_Rect scroll_rect = {0};
f32 v = unlerp(min_target_y, view->target_y, max_target_y);
i32 line_height = view->font_height;
f32 old_cursor_y = view_get_cursor_y(view);
f32 cursor_y = old_cursor_y;
f32 cursor_max_y = max_y - view->font_height * 3;
f32 cursor_max_y = CursorMaxY(view_file_height(view), line_height);
f32 cursor_min_y = CursorMinY(min_target_y, line_height);
f32 delta = 9.f * view->font_height;
f32 lerp_space_delta = (delta);
if (max_target_y > min_target_y){
lerp_space_delta /= (max_target_y - min_target_y);
f32 target_y;
if (gui_get_scroll_vars(target, view->showing_ui, &view->file_scroll)){
target_y = view->file_scroll.target_y;
if (cursor_y > target_y + cursor_max_y){
cursor_y = target_y + cursor_max_y;
}
if (target_y != 0 && cursor_y < target_y + cursor_min_y){
cursor_y = target_y + cursor_min_y;
}
if (gui_start_scrollable(target, view->showing_ui, &v, lerp_space_delta, &scroll_rect)){
view->target_y = lerp(min_target_y, v, max_target_y);
if (view->target_y < min_target_y) view->target_y = min_target_y;
if (view->target_y > max_target_y) view->target_y = max_target_y;
if (cursor_y > view->target_y + cursor_max_y) cursor_y = view->target_y + cursor_max_y;
if (cursor_y < view->target_y - view->scroll_min_limit) cursor_y = view->target_y - view->scroll_min_limit;
if (cursor_y != old_cursor_y){
if (cursor_y > old_cursor_y){
@ -3621,10 +3594,10 @@ step_file_view(System_Functions *system, View *view, b32 is_active){
}
}
view->file_rect = scroll_rect;
gui_start_scrollable(target, view->showing_ui, view->file_scroll, delta);
if (view->scroll_y < min_target_y) view->scroll_y = min_target_y;
if (view->scroll_y > max_target_y) view->scroll_y = max_target_y;
if (view->file_scroll.scroll_y < min_target_y) view->file_scroll.scroll_y = min_target_y;
if (view->file_scroll.scroll_y > max_target_y) view->file_scroll.scroll_y = max_target_y;
gui_do_file(target);
}
@ -3675,8 +3648,9 @@ step_file_view(System_Functions *system, View *view, b32 is_active){
}
gui_do_text_field(target, message, text);
i32_Rect scroll_rect = {0};
gui_start_scrollable(target, view->showing_ui, 0, 3.f, &scroll_rect);
gui_get_scroll_vars(target, view->showing_ui, &view->gui_scroll);
gui_start_scrollable(target, view->showing_ui, view->gui_scroll, 9.f * view->font_height);
for (i = 0; i < files->count; ++i, ++info){
append(&full_path, info->filename);
terminate_with_null(&full_path);
@ -3709,10 +3683,21 @@ step_file_view(System_Functions *system, View *view, b32 is_active){
}
}
gui_end_top_level(target);
return(1);
}
internal f32
view_get_scroll_y(View *view){
f32 v;
if (view->showing_ui == VUI_None){
v = view->file_scroll.scroll_y;
}
else{
v = view->gui_scroll.scroll_y;
}
return(v);
}
internal i32
do_input_file_view(System_Functions *system, Exchange *exchange,
View *view, i32_Rect rect, b32 is_active, Input_Summary *user_input){
@ -3736,7 +3721,20 @@ do_input_file_view(System_Functions *system, Exchange *exchange,
case guicom_file:
{
view->scroll_min_limit = -(f32)(gui_session.clip_rect.y0 - gui_session.rect.y0);
f32 old_min_y = view->gui_target.scroll_updated.min_y;
f32 new_min_y = -(f32)(gui_session.clip_rect.y0 - gui_session.rect.y0);
if (old_min_y != new_min_y){
view->gui_target.scroll_updated.min_y = new_min_y;
gui_activate_scrolling(&view->gui_target);
}
f32 old_max_y = view->gui_target.scroll_updated.max_y;
f32 new_max_y = view_compute_max_target_y(view);
if (old_max_y != new_max_y){
view->gui_target.scroll_updated.max_y = new_max_y;
gui_activate_scrolling(&view->gui_target);
}
if (view->reinit_scrolling){
view_reinit_scrolling(view);
}
@ -3780,10 +3778,12 @@ do_input_file_view(System_Functions *system, Exchange *exchange,
target->hot = id;
}
if (user_input->mouse.release_l && gui_id_eq(target->hot, id)){
target->active = gui_id_scrollbar();
target->hot = {0};
target->scroll_v -= target->scroll_delta;
if (target->scroll_v < 0) target->scroll_v = 0;
target->scroll_updated.target_y -= target->delta;
if (target->scroll_updated.target_y < target->scroll_updated.min_y){
target->scroll_updated.target_y = target->scroll_updated.min_y;
}
gui_activate_scrolling(target);
}
}
else if (gui_id_eq(target->hover, id)){
@ -3796,6 +3796,7 @@ do_input_file_view(System_Functions *system, Exchange *exchange,
GUI_id id = gui_id_scrollbar_slider();
i32 mx = user_input->mouse.x;
i32 my = user_input->mouse.y;
f32 v = 0;
if (hit_check(mx, my, gui_session.rect)){
target->hover = id;
@ -3808,17 +3809,23 @@ do_input_file_view(System_Functions *system, Exchange *exchange,
}
if (gui_id_eq(target->hot, id)){
target->active = gui_id_scrollbar();
target->scroll_v = unlerp(gui_session.scroll_top, (f32)my, gui_session.scroll_bottom);
if (target->scroll_v < 0) target->scroll_v = 0;
if (target->scroll_v > 1) target->scroll_v = 1;
v = unlerp(gui_session.scroll_top, (f32)my, gui_session.scroll_bottom);
if (v < 0) v = 0;
if (v > 1.f) v = 1.f;
target->scroll_updated.target_y = lerp(target->scroll_updated.min_y, v, target->scroll_updated.max_y);
gui_activate_scrolling(target);
}
if (user_input->mouse.wheel != 0){
target->active = gui_id_scrollbar();
target->scroll_v += user_input->mouse.wheel*target->scroll_delta;
if (target->scroll_v < 0) target->scroll_v = 0;
if (target->scroll_v > 1) target->scroll_v = 1;
target->scroll_updated.target_y += user_input->mouse.wheel*target->delta;
if (target->scroll_updated.target_y < target->scroll_updated.min_y){
target->scroll_updated.target_y = target->scroll_updated.min_y;
}
if (target->scroll_updated.target_y > target->scroll_updated.max_y){
target->scroll_updated.target_y = target->scroll_updated.max_y;
}
gui_activate_scrolling(target);
}
}break;
@ -3834,10 +3841,12 @@ do_input_file_view(System_Functions *system, Exchange *exchange,
target->hot = id;
}
if (user_input->mouse.release_l && gui_id_eq(target->hot, id)){
target->active = gui_id_scrollbar();
target->hot = {0};
target->scroll_v += target->scroll_delta;
if (target->scroll_v > 1) target->scroll_v = 1;
target->scroll_updated.target_y += target->delta;
if (target->scroll_updated.target_y > target->scroll_updated.max_y){
target->scroll_updated.target_y = target->scroll_updated.max_y;
}
gui_activate_scrolling(target);
}
}
else if (gui_id_eq(target->hover, id)){
@ -3852,6 +3861,26 @@ do_input_file_view(System_Functions *system, Exchange *exchange,
target->hot = {0};
}
{
GUI_Scroll_Vars scroll_vars = view->gui_target.scroll_updated;
b32 is_new_target = 0;
if (scroll_vars.target_x != scroll_vars.prev_target_x) is_new_target = 1;
if (scroll_vars.target_y != scroll_vars.prev_target_y) is_new_target = 1;
if (view->models->scroll_rule(
scroll_vars.target_x, scroll_vars.target_y,
&scroll_vars.scroll_x, &scroll_vars.scroll_y,
(view->id) + 1, is_new_target)){
result = 1;
gui_activate_scrolling(&view->gui_target);
}
scroll_vars.prev_target_x = scroll_vars.target_x;
scroll_vars.prev_target_y = scroll_vars.target_y;
view->gui_target.scroll_updated = scroll_vars;
}
return(result);
#if 0
@ -3994,8 +4023,8 @@ draw_file_loaded(View *view, i32_Rect rect, b32 is_active, Render_Target *target
Buffer_Render_Options opts = {};
f32 *wraps = view->line_wrap_y;
f32 scroll_x = view->scroll_x;
f32 scroll_y = view->scroll_y;
f32 scroll_x = view->file_scroll.scroll_x;
f32 scroll_y = view->file_scroll.scroll_y;
{
render_cursor = buffer_get_start_cursor(&file->state.buffer, wraps, scroll_y,
@ -4180,7 +4209,7 @@ do_render_file_bar(Render_Target *target, View *view, Editing_File *file, i32_Re
}
else{
char line_number_space[30];
String line_number = make_string(line_number_space, 0, 30);
String line_number = make_fixed_width_string(line_number_space);
append(&line_number, " L#");
append_int_to_str(view->cursor.line, &line_number);
@ -4271,8 +4300,12 @@ do_render_file_view(System_Functions *system, Exchange *exchange,
GUI_Header *h;
GUI_Target *gui_target = &view->gui_target;
f32 v;
gui_session_init(&gui_session, rect, view->font_height);
v = view_get_scroll_y(view);
for (h = (GUI_Header*)gui_target->push.base;
h->type;
h = NextHeader(h)){
@ -4281,13 +4314,11 @@ do_render_file_view(System_Functions *system, Exchange *exchange,
case guicom_top_bar:
{
do_render_file_bar(target, view, file, gui_session.rect);
}
break;
}break;
case guicom_file:
{
target->push_clip(target, gui_session.clip_rect);
view->scroll_min_limit = -(f32)(gui_session.clip_rect.y0 - gui_session.rect.y0);
if (view->reinit_scrolling){
view_reinit_scrolling(view);
}
@ -4753,12 +4784,6 @@ live_set_alloc_view(Live_Views *live_set, Panel *panel, Models *models){
result.view->models = models;
result.view->scrub_max = 1;
#if 0
// TODO(allen): Make "interactive" mode customizable just like the query bars!
result.view->query = make_fixed_width_string(result.view->query_);
result.view->dest = make_fixed_width_string(result.view->dest_);
#endif
init_query_set(&result.view->query_set);
{

90
4ed_gui.cpp
View File

@ -73,6 +73,19 @@ struct GUI_id{
u64 id[1];
};
struct GUI_Scroll_Vars{
f32 scroll_y;
f32 target_y;
f32 prev_target_y;
f32 min_y, max_y;
f32 scroll_x;
f32 target_x;
f32 prev_target_x;
i32_Rect region;
};
struct GUI_Target{
Partition push;
@ -80,10 +93,10 @@ struct GUI_Target{
GUI_id hot;
GUI_id hover;
f32 scroll_v;
f32 scroll_delta;
GUI_Scroll_Vars scroll_original;
GUI_Scroll_Vars scroll_updated;
f32 delta;
u32 scroll_id;
i32_Rect scrollable_area;
};
struct GUI_Header{
@ -237,7 +250,6 @@ gui_push_string(GUI_Target *target, GUI_Header *h, String s){
internal void
gui_begin_top_level(GUI_Target *target){
target->push.pos = 0;
target->scroll_delta = 0;
}
internal void
@ -328,31 +340,35 @@ gui_id_scrollbar_bottom(){
}
internal b32
gui_start_scrollable(GUI_Target *target, u32 scroll_id, f32 *v, f32 d, i32_Rect *rect){
gui_get_scroll_vars(GUI_Target *target, u32 scroll_id, GUI_Scroll_Vars *vars_out){
b32 result = 0;
GUI_Header *h;
target->scroll_delta = d;
h = gui_push_simple_command(target, guicom_scrollable);
if (gui_id_eq(gui_id_scrollbar(), target->active) && target->scroll_id == scroll_id){
if (v) *v = target->scroll_v;
if (gui_id_eq(target->active, gui_id_scrollbar()) && target->scroll_id == scroll_id){
*vars_out = target->scroll_updated;
result = 1;
}
else{
if (v) target->scroll_v = *v;
}
if (target->scroll_id == scroll_id){
*rect = target->scrollable_area;
return(result);
}
internal void
gui_start_scrollable(GUI_Target *target, u32 scroll_id, GUI_Scroll_Vars scroll_vars, f32 delta){
GUI_Header *h;
target->delta = delta;
h = gui_push_simple_command(target, guicom_scrollable);
target->scroll_original = scroll_vars;
target->scroll_updated = scroll_vars;
target->scroll_id = scroll_id;
gui_push_simple_command(target, guicom_scrollable_top);
gui_push_simple_command(target, guicom_scrollable_slider);
gui_push_simple_command(target, guicom_scrollable_bottom);
return(result);
}
internal void
gui_activate_scrolling(GUI_Target *target){
target->active = gui_id_scrollbar();
}
struct GUI_Section{
b32 overlapped;
@ -470,12 +486,16 @@ gui_interpret(GUI_Target *target, GUI_Session *session, GUI_Header *h){
i32_Rect rect = {0};
i32 y = 0;
i32 end_v = -1;
f32 lerp_space_scroll_v = 0;
i32 scroll_v = (i32)target->scroll_original.scroll_y;
Assert(session->t < ArrayCount(session->sections));
section = session->sections + session->t;
y = section->v;
if (y < session->full_rect.y1){
if (!session->is_scrollable) scroll_v = 0;
if (y - scroll_v < session->full_rect.y1){
switch (h->type){
case guicom_null: Assert(0); break;
@ -525,6 +545,7 @@ gui_interpret(GUI_Target *target, GUI_Session *session, GUI_Header *h){
rect = gui_layout_top_bottom(session, y, session->full_rect.y1);
end_v = rect.y1;
end_section = section;
scroll_v = 0;
break;
case guicom_text_field:
@ -552,10 +573,15 @@ gui_interpret(GUI_Target *target, GUI_Session *session, GUI_Header *h){
session->scroll_rect = rect;
session->is_scrollable = 1;
target->scrollable_area.x0 = session->full_rect.x0;
target->scrollable_area.x1 = rect.x0;
target->scrollable_area.y0 = rect.y0;
target->scrollable_area.y1 = rect.y1;
{
i32_Rect scrollable_rect;
scrollable_rect.x0 = session->full_rect.x0;
scrollable_rect.x1 = rect.x0;
scrollable_rect.y0 = rect.y0;
scrollable_rect.y1 = rect.y1;
target->scroll_updated.region = scrollable_rect;
}
break;
case guicom_scrollable_top:
@ -563,13 +589,17 @@ gui_interpret(GUI_Target *target, GUI_Session *session, GUI_Header *h){
Assert(!section->overlapped);
give_to_user = 1;
gui_scrollbar_top(session->scroll_rect, &rect);
scroll_v = 0;
break;
case guicom_scrollable_slider:
Assert(session->is_scrollable);
Assert(!section->overlapped);
give_to_user = 1;
gui_scrollbar_slider(session->scroll_rect, &rect, target->scroll_v, &session->scroll_top, &session->scroll_bottom);
lerp_space_scroll_v = unlerp(
(f32)target->scroll_original.min_y, (f32)target->scroll_original.target_y, (f32)target->scroll_original.max_y);
gui_scrollbar_slider(session->scroll_rect, &rect, lerp_space_scroll_v, &session->scroll_top, &session->scroll_bottom);
scroll_v = 0;
break;
case guicom_scrollable_bottom:
@ -577,6 +607,7 @@ gui_interpret(GUI_Target *target, GUI_Session *session, GUI_Header *h){
Assert(!section->overlapped);
give_to_user = 1;
gui_scrollbar_bottom(session->scroll_rect, &rect);
scroll_v = 0;
break;
}
@ -591,12 +622,23 @@ gui_interpret(GUI_Target *target, GUI_Session *session, GUI_Header *h){
}
}
rect.y0 -= scroll_v;
rect.y1 -= scroll_v;
if (rect.y1 > session->full_rect.y0){
session->rect = rect;
rect.y0 += scroll_v;
if (rect.y0 < max_v){
rect.y0 = max_v;
}
rect.y0 -= scroll_v;
session->clip_rect = rect;
}
else{
give_to_user = 0;
}
}
if (end_section){
gui_section_end_item(end_section, end_v);