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feat(terminal): and stylebox support

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Adds support for 'normal' and 'focus' Style Boxes to Terminal node.
Changes default background color to transparent, with background to be
set by StyleBox.

If background color is not transparent, will draw a background color
rect to cover the entire control over the top of any stylebox. This is
consistent with the behavior of the TextEdit node with regards to theme
colors and styleboxes.
This commit is contained in:
Leroy Hopson 2024-04-14 20:28:26 +12:00
parent a5951978f7
commit d6a4adf6aa
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GPG key ID: D2747312A6DB51AA
40 changed files with 608 additions and 52 deletions
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15
addons/godot_xterm/shaders/common.gdshaderinc
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@ -18,6 +18,7 @@ uniform bool inverse_enabled = true;
#ifdef BACKGROUND
uniform vec4 background_color;
uniform sampler2D background_colors;
uniform sampler2D screen_texture : hint_screen_texture, repeat_disable, filter_nearest;
#endif
#ifdef FOREGROUND
@ -48,7 +49,15 @@ void fragment() {
#endif
if (has_attribute(sample_uv, FLAG_INVERSE) && inverse_enabled) {
color = vec4(1.0 - color.rgb, color.a);
#ifdef BACKGROUND
vec4 bg_color = textureLod(screen_texture, SCREEN_UV, 0.0);
vec4 target_color;
target_color.a = color.a + (1.0 - color.a) * bg_color.a;
target_color.rgb = 1.0 / target_color.a * (color.a * color.rgb + (1.0 - color.a) * bg_color.a * bg_color.rgb);
#else
vec4 target_color = color;
#endif
color = vec4(1.0 - target_color.rgb, target_color.a);
}
#ifdef FOREGROUND
@ -65,10 +74,6 @@ void fragment() {
COLOR = color;
#endif
} else { // Outside the grid.
#ifdef BACKGROUND
COLOR = background_color;
#elif defined(FOREGROUND)
COLOR = transparent;
#endif
}
}