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Update to the latest version on time.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,164 @@ | ||
| /* | ||
| * Copyright 2024 elementary, Inc. (https://elementary.io) | ||
| * SPDX-License-Identifier: LGPL-2.0-or-later | ||
| */ | ||
|
|
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| #if HAS_MUTTER46 | ||
| public class Gala.Drawing.Canvas : GLib.Object, Clutter.Content { | ||
| private int width = -1; | ||
| private int height = -1; | ||
| private float scale_factor = 1.0f; | ||
|
|
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| private Cogl.Texture? texture = null; | ||
| private Cogl.Bitmap? bitmap = null; | ||
|
|
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| private bool dirty = false; | ||
|
|
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| private void emit_draw () requires (width > 0 && height > 0) { | ||
| dirty = true; | ||
| int real_width = (int) Math.ceilf (width * scale_factor); | ||
| int real_height = (int) Math.ceilf (height * scale_factor); | ||
| if (bitmap == null) { | ||
| unowned Cogl.Context ctx = Clutter.get_default_backend ().get_cogl_context (); | ||
| bitmap = new Cogl.Bitmap.with_size (ctx, real_width, real_height, Cogl.PixelFormat.CAIRO_ARGB32_COMPAT); | ||
| } | ||
|
|
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| unowned Cogl.Buffer? buffer = bitmap.get_buffer (); | ||
| if (buffer == null) { | ||
| return; | ||
| } | ||
|
|
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| buffer.set_update_hint (Cogl.BufferUpdateHint.DYNAMIC); | ||
| void* data = buffer.map (Cogl.BufferAccess.READ_WRITE, Cogl.BufferMapHint.DISCARD); | ||
| Cairo.ImageSurface surface; | ||
| bool mapped_buffer; | ||
| if (data != null) { | ||
| var bitmap_stride = bitmap.get_rowstride (); | ||
| surface = new Cairo.ImageSurface.for_data ((uchar[]) data, Cairo.Format.ARGB32, real_width, real_height, bitmap_stride); | ||
| mapped_buffer = true; | ||
| } else { | ||
| surface = new Cairo.ImageSurface (Cairo.Format.ARGB32, real_width, real_height); | ||
| mapped_buffer = false; | ||
| } | ||
|
|
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| surface.set_device_scale (scale_factor, scale_factor); | ||
| var cr = new Cairo.Context (surface); | ||
| draw ((owned) cr, width, height, scale_factor); | ||
|
|
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| if (mapped_buffer) { | ||
| buffer.unmap (); | ||
| } else { | ||
| int size = surface.get_stride () * height; | ||
| buffer.set_data (0, surface.get_data (), size); | ||
| } | ||
| } | ||
|
|
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| public bool get_preferred_size (out float out_width, out float out_height) { | ||
| if (width < 0 || width < 0) { | ||
| out_width = 0; | ||
| out_height = 0; | ||
| return false; | ||
| } | ||
|
|
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| out_width = Math.ceilf (width * scale_factor); | ||
| out_height = Math.ceilf (height * scale_factor); | ||
|
|
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| return true; | ||
| } | ||
|
|
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| public void invalidate () { | ||
| if (width < 0 || height < 0) { | ||
| return; | ||
| } | ||
|
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| emit_draw (); | ||
| } | ||
|
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| public void invalidate_size () { } | ||
|
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| public void paint_content (Clutter.Actor actor, Clutter.PaintNode root, Clutter.PaintContext paint_context) { | ||
| if (bitmap == null) { | ||
| return; | ||
| } | ||
|
|
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| if (dirty) { | ||
| texture = null; | ||
| } | ||
|
|
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| if (texture == null) { | ||
| texture = new Cogl.Texture2D.from_bitmap (bitmap); | ||
| } | ||
|
|
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| if (texture == null) { | ||
| return; | ||
| } | ||
|
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| var node = actor.create_texture_paint_node (texture); | ||
| root.add_child (node); | ||
|
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| dirty = false; | ||
| } | ||
|
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| public void set_size (int new_width, int new_height) requires (new_width >= -1 && new_height >= -1) { | ||
| if (new_width == width && new_height == height) { | ||
| return; | ||
| } | ||
|
|
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| width = new_width; | ||
| height = new_height; | ||
|
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| invalidate (); | ||
| } | ||
|
|
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| public void set_scale_factor (float new_scale_factor) requires (new_scale_factor > 0.0f) { | ||
| if (new_scale_factor != scale_factor) { | ||
| scale_factor = new_scale_factor; | ||
|
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| invalidate (); | ||
| } | ||
| } | ||
|
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|
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| public virtual signal void draw (Cairo.Context cr, int width, int height, float scale_factor); | ||
| } | ||
| #else | ||
| public class Gala.Drawing.Canvas : GLib.Object, Clutter.Content { | ||
| public Clutter.Canvas canvas; | ||
|
|
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| construct { | ||
| canvas = new Clutter.Canvas (); | ||
| canvas.draw.connect (on_draw); | ||
| } | ||
|
|
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| public bool get_preferred_size (out float out_width, out float out_height) { | ||
| return canvas.get_preferred_size (out out_width, out out_height); | ||
| } | ||
|
|
||
| public void invalidate () { | ||
| canvas.invalidate (); | ||
| } | ||
|
|
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| public void invalidate_size () { | ||
| canvas.invalidate_size (); | ||
| } | ||
|
|
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| public void paint_content (Clutter.Actor actor, Clutter.PaintNode root, Clutter.PaintContext paint_context) { | ||
| canvas.paint_content (actor, root, paint_context); | ||
| } | ||
|
|
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| public void set_size (int new_width, int new_height) requires (new_width >= -1 && new_height >= -1) { | ||
| canvas.set_size (new_width, new_height); | ||
| } | ||
|
|
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| public void set_scale_factor (float new_scale_factor) requires (new_scale_factor > 0.0f) { | ||
| canvas.set_scale_factor (new_scale_factor); | ||
| } | ||
|
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| private bool on_draw (Cairo.Context cr, int width, int height) { | ||
| draw (cr, width, height, canvas.get_scale_factor ()); | ||
| return true; | ||
| } | ||
|
|
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| public virtual signal void draw (Cairo.Context cr, int width, int height, float scale_factor); | ||
| } | ||
| #endif |
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This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
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This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
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