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implement animated underline cursor and correct its position

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This commit is contained in:
Aaron Ruan
2025-06-27 12:05:25 +08:00
parent 7d078590b9
commit 072d54bc3a
2 changed files with 5 additions and 3 deletions
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1
src/font/sprite/Face.zig
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@ -133,6 +133,7 @@ pub fn renderGlyph(
width, width,
metrics.cursor_height, metrics.cursor_height,
metrics.cursor_thickness, metrics.cursor_thickness,
metrics.underline_position,
); );
// Cursors are drawn at their specified height // Cursors are drawn at their specified height

7
src/font/sprite/cursor.zig
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@ -14,6 +14,7 @@ pub fn renderGlyph(
width: u32, width: u32,
height: u32, height: u32,
thickness: u32, thickness: u32,
underline_pos: u32,
) !font.Glyph { ) !font.Glyph {
// Make a canvas of the desired size // Make a canvas of the desired size
var canvas = try font.sprite.Canvas.init(alloc, width, height); var canvas = try font.sprite.Canvas.init(alloc, width, height);
@ -45,7 +46,7 @@ pub fn renderGlyph(
}, .on), }, .on),
Sprite.cursor_underline => canvas.rect(.{ Sprite.cursor_underline => canvas.rect(.{
.x = 0, .x = 0,
.y = height -| thickness, .y = 0,
.width = width, .width = width,
.height = thickness, .height = thickness,
}, .on), }, .on),
@ -61,9 +62,9 @@ pub fn renderGlyph(
// uniform code. -- In the future code will be introduced to // uniform code. -- In the future code will be introduced to
// auto-crop the canvas so that this isn't needed. // auto-crop the canvas so that this isn't needed.
.width = if (sprite == .cursor_bar) thickness else width, .width = if (sprite == .cursor_bar) thickness else width,
.height = height, .height = if (sprite == .cursor_underline) thickness else height,
.offset_x = 0, .offset_x = 0,
.offset_y = @intCast(height), .offset_y = if (sprite == .cursor_underline) @intCast(height -| underline_pos) else @intCast(height),
.atlas_x = region.x, .atlas_x = region.x,
.atlas_y = region.y, .atlas_y = region.y,
.advance_x = @floatFromInt(width), .advance_x = @floatFromInt(width),