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Refactor y cursor, add small utility for debugging, fix bug in buffer

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This commit is contained in:
Krzosa Karol
2024-06-28 13:30:55 +02:00
parent b8cdb49ea5
commit 4dfa9b432e
2 changed files with 69 additions and 7 deletions
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3
src/text_editor/buffer.cpp
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@@ -249,8 +249,11 @@ void ApplyEdits(Buffer *buffer, Array<Edit> edits) {
#endif
// We need to sort from lowest to higest based on range.min
{
Array<Edit> edits_copy = edits.copy(scratch);
MergeSort(edits.len, edits_copy.data, edits.data);
edits = edits_copy;
}
// Try resizing the buffers
int64_t len_offset = size_to_insert - size_to_delete;

67
src/text_editor/main.cpp
View File

@@ -107,6 +107,11 @@ int64_t MoveUp(Buffer &buffer, int64_t pos) {
return new_pos;
}
bool AreEqual(float a, float b, float epsilon = 0.001f) {
bool result = (a - epsilon < b && a + epsilon > b);
return result;
}
void BeforeEdit(Window *window) {
// Merge cursors that overlap, this needs to be handled before any edits to
// make sure overlapping edits won't happen.
@@ -157,7 +162,33 @@ void AfterEdit(Window *window, Array<Edit> edits) {
window->layout = CalculateLayout(&window->layout_arena, window->buffer, window->font, window->font_size, window->font_spacing);
}
Arena PermArena;
Arena FrameArena;
struct DebugLine {
bool persist;
String string;
};
Array<DebugLine> DebugLines = {};
void Dbg(const char *str, ...) {
STRING_FORMAT(FrameArena, str, result);
DebugLines.add({false, result});
}
void DbgPersist(const char *str, ...) {
STRING_FORMAT(PermArena, str, result);
DebugLines.add({true, result});
}
void Dbg_Draw() {
int y = 0;
IterRemove(DebugLines) {
IterRemovePrepare(DebugLines);
if (it.persist == false) remove_item = true;
DrawText(it.string.data, 0, y, 20, BLACK);
y += 20;
}
}
int main() {
InitScratch();
RunBufferTests();
@@ -166,6 +197,7 @@ int main() {
SetTargetFPS(60);
InitArena(&FrameArena);
InitArena(&PermArena);
float font_size = 64;
float font_spacing = 1;
Font font = LoadFontEx("C:/Windows/Fonts/times.ttf", (int)font_size, NULL, 250);
@@ -458,6 +490,7 @@ int main() {
Array<LayoutColumn> visible_columns = CalculateVisibleColumns(&FrameArena, window);
// Mouse selection
// @todo: multicursor
// @todo: selecting while not hovering over glyph shapes
{
SetMouseCursor(MOUSE_CURSOR_DEFAULT);
Vec2 mouse = GetMousePosition();
@@ -485,7 +518,7 @@ int main() {
window.mouse_selecting = false;
}
Cursor *cursor = window.cursors.last();
cursor[0] = ChangeBack(*cursor, rowcol.b->pos);
cursor[0] = ChangeFront(*cursor, rowcol.b->pos);
}
}
}
@@ -493,13 +526,38 @@ int main() {
// Update the scroll based on first cursor
// @todo: needs a rewrite, make sure we also handle scrolling for mouse
if (!AreEqual(window.main_cursor_begin_frame, window.cursors[0])) {
#if 1
Range visible_line_range = CalculateVisibleLineRange(window);
int64_t visible_lines = GetRangeSize(visible_line_range);
float visible_size_y = font_size * (float)visible_lines;
Vec2 rect_size = GetSize(window.rect);
float cut_off_y = visible_size_y - rect_size.y;
int64_t front = GetFront(window.cursors[0]);
Line line = FindLine(window.buffer, front);
// Tuple<LayoutRow, LayoutColumn> rowcol = GetRowCol(window, front);
// DbgPersist("line num = %d visible_line_range.max = %d", (int)line.number, (int)visible_line_range.max);
// Bottom
if (line.number > visible_line_range.max - 2) {
int64_t set_view_at_line = line.number - (visible_lines - 1);
window.scroll.y = (set_view_at_line * font_size) + cut_off_y;
}
if (line.number < visible_line_range.min + 1) {
int64_t set_view_at_line = line.number;
window.scroll.y = (set_view_at_line * font_size);
}
#else
Range visible_line_range = CalculateVisibleLineRange(window);
Vec2 rect_size = GetSize(window.rect);
float visible_cells_in_render_units = font_size * (float)GetRangeSize(visible_line_range);
float cut_off_in_render_units = visible_cells_in_render_units - rect_size.y;
Cursor cursor = window.cursors[0];
int64_t front = GetBack(cursor);
int64_t front = GetFront(cursor);
Line line = FindLine(window.buffer, front);
// Scroll Y
@@ -528,14 +586,14 @@ int main() {
float diff = x_cursor_position_in_window_buffer_world_units - window_buffer_world_left_edge;
window.scroll.x += diff;
}
#endif
}
Range visible_line_range = CalculateVisibleLineRange(window);
// Draw the glyphs
Vec2 window_rect_size = GetSize(window.rect);
BeginScissorMode((int)window.rect.min.x, (int)window.rect.min.y, (int)window_rect_size.x, (int)window_rect_size.y);
Range visible_line_range = CalculateVisibleLineRange(window);
for (int64_t line = visible_line_range.min; line < visible_line_range.max; line += 1) {
if (line < 0 || line >= window.layout.rows.len) continue;
LayoutRow &row = window.layout.rows[line];
@@ -587,6 +645,7 @@ int main() {
EndScissorMode();
}
Dbg_Draw();
EndDrawing();
}
}