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Text editor: small buffer window

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This commit is contained in:
Krzosa Karol
2024-06-06 16:42:06 +02:00
parent 50a1ca02b1
commit bcd01c59c4
1 changed files with 43 additions and 24 deletions
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67
examples/text_editor/main.lc
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@@ -37,6 +37,11 @@ main :: proc(): int {
screen_size: Vector2 = {:f32(GetScreenWidth()), :f32(GetScreenHeight())};
screen_rect := Rect2PSize(0, 0, screen_size.x, screen_size.y);
CutBottom(&screen_rect, 200);
CutLeft(&screen_rect, 100);
CutTop(&screen_rect, 100);
CutRight(&screen_rect, 150);
screen_with_bar := screen_rect;
bar := CutRight(&screen_rect, 10);
if IsKeyPressed(KEY_LEFT) || IsKeyPressedRepeat(KEY_LEFT) {
@@ -218,37 +223,45 @@ main :: proc(): int {
buffer_end_wpos := CalculateWorldPosUnscrolled(buffer_end_vpos);
mouse_p := GetMousePosition();
if CheckCollisionPointRec(mouse_p, Rect2PToRectangle(screen_rect)) && !MouseScrolling {
if IsMouseButtonPressed(MOUSE_BUTTON_LEFT) {
p := Vector2Add(mouse_p, Scroll);
p = Vector2Divide(p, Monosize);
x := :int(floorf(p.x));
y := :int(floorf(p.y));
MainCursor.a = CalculatePosFromVisualPos(&buffer, {x, y});
MainCursor.b = MainCursor.a;
} else if IsMouseButtonDown(MOUSE_BUTTON_LEFT) {
p := Vector2Add(mouse_p, Scroll);
p = Vector2Divide(p, Monosize);
x := :int(floorf(p.x));
y := :int(floorf(p.y));
MainCursor.b = CalculatePosFromVisualPos(&buffer, {x, y});
}
SetMouseCursor(MOUSE_CURSOR_IBEAM);
} else {
SetMouseCursor(MOUSE_CURSOR_DEFAULT);
if CheckCollisionPointRec(mouse_p, Rect2PToRectangle(screen_with_bar)) {
if CheckCollisionPointRec(mouse_p, Rect2PToRectangle(screen_rect)) && !MouseScrolling {
if IsMouseButtonPressed(MOUSE_BUTTON_LEFT) {
p := Vector2Add(mouse_p, Scroll);
p = Vector2Subtract(p, screen_rect.min);
p = Vector2Divide(p, Monosize);
x := :int(floorf(p.x));
y := :int(floorf(p.y));
MainCursor.a = CalculatePosFromVisualPos(&buffer, {x, y});
MainCursor.b = MainCursor.a;
} else if IsMouseButtonDown(MOUSE_BUTTON_LEFT) {
p := Vector2Add(mouse_p, Scroll);
p = Vector2Subtract(p, screen_rect.min);
p = Vector2Divide(p, Monosize);
x := :int(floorf(p.x));
y := :int(floorf(p.y));
MainCursor.b = CalculatePosFromVisualPos(&buffer, {x, y});
}
SetMouseCursor(MOUSE_CURSOR_IBEAM);
} else {
SetMouseCursor(MOUSE_CURSOR_DEFAULT);
if IsMouseButtonPressed(MOUSE_BUTTON_LEFT) {
MouseScrolling = true;
if IsMouseButtonPressed(MOUSE_BUTTON_LEFT) {
MouseScrolling = true;
}
}
}
if MouseScrolling {
mouse_scroll_marker_normalized := mouse_p.y / GetRectY(screen_rect);
mouse_scroll_marker_normalized := (mouse_p.y - screen_with_bar.min.y) / GetRectY(bar);
Scroll.y = mouse_scroll_marker_normalized * buffer_end_wpos.y;
if IsMouseButtonReleased(MOUSE_BUTTON_LEFT) MouseScrolling = false;
}
for key := GetCharPressed(); key; key = GetCharPressed() {
selection_range := GetRange(MainCursor);
@@ -330,6 +343,7 @@ main :: proc(): int {
// Draw text
{
BeginScissorMode(:int(screen_rect.min.x), :int(screen_rect.min.y), :int(GetRectX(screen_rect)), :int(GetRectY(screen_rect)));
miny = ClampInt(miny, 0, buffer.lines.len - 1);
maxy = ClampInt(maxy, 0, buffer.lines.len - 1);
for y := miny; y <= maxy; y += 1 {
@@ -339,8 +353,10 @@ main :: proc(): int {
defer free(string.str);
pos := CalculateWorldPos({0, y});
DrawTextEx(font, string.str, pos, font_size, font_spacing, BLACK);
pos_adjusted_by_buffer := Vector2Add(pos, screen_rect.min);
DrawTextEx(font, string.str, pos_adjusted_by_buffer, font_size, font_spacing, BLACK);
}
EndScissorMode();
}
// Draw selection
@@ -350,7 +366,9 @@ main :: proc(): int {
pos := start_vpos;
for iter := Iterate(&buffer, range.min, range.max); IsValid(iter); Advance(&iter) {
world_pos := CalculateWorldPos(pos);
rect := Rect2PSize(world_pos.x, world_pos.y, Monosize.x, Monosize.y);
world_pos_adjusted_by_buffer := Vector2Add(world_pos, screen_rect.min);
rect := Rect2PSize(world_pos_adjusted_by_buffer.x, world_pos_adjusted_by_buffer.y, Monosize.x, Monosize.y);
DrawRect(rect, {0, 255, 0, 40});
pos.x += 1;
@@ -365,9 +383,10 @@ main :: proc(): int {
{
c := CalculateVisualPos(&buffer, MainCursor.b);
p := CalculateWorldPos(c);
pos_adjusted_by_buffer := Vector2Add(p, screen_rect.min);
cursor_size: f32 = Monosize.x * 0.2;
rect := Rect2PSize(p.x, p.y, Monosize.x, Monosize.y);
rect := Rect2PSize(pos_adjusted_by_buffer.x, pos_adjusted_by_buffer.y, Monosize.x, Monosize.y);
rect = CutLeft(&rect, cursor_size);
DrawRect(rect, RED);