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Fix scaling image for GTK4

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Marvin W 2023-01-08 21:41:10 +01:00
parent 99d9cb383a
commit cc7db3b85f
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GPG key ID: 072E9235DB996F2A
3 changed files with 111 additions and 183 deletions
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8
main/data/style.css
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@ -132,7 +132,7 @@ window.dino-main .dino-quote:hover {
margin-bottom: 0;
}
/* Fie Widget */
/* File Widget */
window.dino-main .file-box-outer,
window.dino-main .call-box-outer {
@ -148,7 +148,7 @@ window.dino-main .call-box {
window.dino-main .file-image-widget {
border: 1px solid alpha(@theme_fg_color, 0.1);
border-radius: 3px;
border-radius: 6px;
}
window.dino-main .file-image-widget .file-box-outer {
@ -167,6 +167,10 @@ window.dino-main .file-image-widget .file-box-outer button:hover {
background: rgba(100, 100, 100, 0.5);
}
.dino-main .file-image-widget picture {
border-radius: 6px;
}
/* Call widget */
window.dino-main .call-box-outer.incoming {

25
main/src/ui/conversation_content_view/file_image_widget.vala
View file

@ -8,7 +8,6 @@ namespace Dino.Ui {
public class FileImageWidget : Box {
private ScalingImage image;
FileDefaultWidget file_default_widget;
FileDefaultWidgetController file_default_widget_controller;
@ -19,29 +18,7 @@ public class FileImageWidget : Box {
}
public async void load_from_file(File file, string file_name, int MAX_WIDTH=600, int MAX_HEIGHT=300) throws GLib.Error {
// Load and prepare image in tread
Thread<ScalingImage?> thread = new Thread<ScalingImage?> (null, () => {
ScalingImage image = new ScalingImage() { halign=Align.START, visible = true, max_width = MAX_WIDTH, max_height = MAX_HEIGHT };
Gdk.Pixbuf pixbuf;
try {
pixbuf = new Gdk.Pixbuf.from_file(file.get_path());
} catch (Error error) {
warning("Can't load picture %s - %s", file.get_path(), error.message);
Idle.add(load_from_file.callback);
return null;
}
pixbuf = pixbuf.apply_embedded_orientation();
image.load(pixbuf);
Idle.add(load_from_file.callback);
return image;
});
yield;
image = thread.join();
if (image == null) throw new Error(-1, 0, "Error loading image");
FixedRatioPicture image = new FixedRatioPicture() { min_width = 100, min_height = 100, max_width = MAX_WIDTH, max_height = MAX_HEIGHT, file = file };
FileInfo file_info = file.query_info("*", FileQueryInfoFlags.NONE);
string? mime_type = file_info.get_content_type();

261
main/src/ui/util/scaling_image.vala
View file

@ -2,183 +2,130 @@ using Gdk;
using Gtk;
namespace Dino.Ui {
class ScalingImage : Widget {
public int min_width { get; set; default = -1; }
class FixedRatioLayout : Gtk.LayoutManager {
public int min_width { get; set; default = 0; }
public int target_width { get; set; default = -1; }
public int max_width { get; set; default = -1; }
public int min_height { get; set; default = -1; }
public int max_height { get; set; default = -1; }
public int max_width { get; set; default = int.MAX; }
public int min_height { get; set; default = 0; }
public int target_height { get; set; default = -1; }
public int max_height { get; set; default = int.MAX; }
private Pixbuf image;
private double image_ratio;
private int image_height = 0;
private int image_width = 0;
private int last_allocation_height = -1;
private int last_allocation_width = -1;
private int last_scale_factor = -1;
private Cairo.ImageSurface? cached_surface;
private static int8 use_image_surface = -1;
public void load(Pixbuf image) {
this.image = image;
this.image_ratio = ((double)image.height) / ((double)image.width);
this.image_height = image.height;
this.image_width = image.width;
queue_resize();
public FixedRatioLayout() {
this.notify.connect(layout_changed);
}
public override void dispose() {
base.dispose();
image = null;
cached_surface = null;
}
private void measure_target_size(Gtk.Widget widget, out int width, out int height) {
if (target_width != -1 && target_height != -1) {
width = target_width;
height = target_height;
return;
}
Widget child;
width = min_width;
height = min_height;
private void calculate_size(ref double exact_width, ref double exact_height) {
if (exact_width == -1 && exact_height == -1) {
if (target_width == -1) {
exact_width = ((double)image_width) / ((double)scale_factor);
exact_height = ((double)image_height) / ((double)scale_factor);
} else {
exact_width = target_width;
exact_height = exact_width * image_ratio;
child = widget.get_first_child();
while (child != null) {
if (child.should_layout()) {
int child_min = 0;
int child_nat = 0;
int child_min_baseline = -1;
int child_nat_baseline = -1;
child.measure(Orientation.HORIZONTAL, -1, out child_min, out child_nat, out child_min_baseline, out child_nat_baseline);
width = int.max(child_nat, width);
}
} else if (exact_width != -1) {
exact_height = exact_width * image_ratio;
} else if (exact_height != -1) {
exact_width = exact_height / image_ratio;
} else {
if (exact_width * image_ratio > exact_height + scale_factor) {
exact_width = exact_height / image_ratio;
} else if (exact_height / image_ratio > exact_width + scale_factor) {
exact_height = exact_width * image_ratio;
child = child.get_next_sibling();
}
width = int.min(width, max_width);
child = widget.get_first_child();
while (child != null) {
if (child.should_layout()) {
int child_min = 0;
int child_nat = 0;
int child_min_baseline = -1;
int child_nat_baseline = -1;
child.measure(Orientation.VERTICAL, width, out child_min, out child_nat, out child_min_baseline, out child_nat_baseline);
height = int.max(child_nat, height);
}
child = child.get_next_sibling();
}
if (max_width != -1 && exact_width > max_width) {
exact_width = max_width;
exact_height = exact_width * image_ratio;
}
if (max_height != -1 && exact_height > max_height) {
exact_height = max_height;
exact_width = exact_height / image_ratio;
}
if (exact_width < min_width) exact_width = min_width;
if (exact_height < min_height) exact_height = min_height;
}
public override void size_allocate(int width, int height, int baseline) {
if (max_width != -1) width = int.min(width, max_width);
if (max_height != -1) height = int.min(height, max_height);
height = int.max(height, min_height);
width = int.max(width, min_width);
double exact_width = width, exact_height = height;
calculate_size(ref exact_width, ref exact_height);
base.size_allocate(width, height, baseline);
if (last_allocation_height != height || last_allocation_width != width || last_scale_factor != scale_factor) {
last_allocation_height = height;
last_allocation_width = width;
last_scale_factor = scale_factor;
cached_surface = null;
}
}
if (height > max_height) {
height = max_height;
width = min_width;
public override void snapshot(Gtk.Snapshot snapshot) {
Cairo.Context context = snapshot.append_cairo(Graphene.Rect.alloc().init(0, 0, get_allocated_width(), get_allocated_height()));
draw(context);
}
public bool draw(Cairo.Context ctx_in) {
if (image == null) return false;
Cairo.Context ctx = ctx_in;
int width = this.get_allocated_width(), height = this.get_allocated_height(), base_factor = 1;
if (use_image_surface == -1) {
// TODO: detect if we have to buffer in image surface
use_image_surface = 1;
}
if (use_image_surface == 1) {
ctx_in.scale(1f / scale_factor, 1f / scale_factor);
if (cached_surface != null) {
ctx_in.set_source_surface(cached_surface, 0, 0);
ctx_in.paint();
ctx_in.set_source_rgb(0, 0, 0);
return true;
child = widget.get_first_child();
while (child != null) {
if (child.should_layout()) {
int child_min = 0;
int child_nat = 0;
int child_min_baseline = -1;
int child_nat_baseline = -1;
child.measure(Orientation.HORIZONTAL, max_height, out child_min, out child_nat, out child_min_baseline, out child_nat_baseline);
width = int.max(child_nat, width);
}
child = child.get_next_sibling();
}
width *= scale_factor;
height *= scale_factor;
base_factor *= scale_factor;
cached_surface = new Cairo.ImageSurface(Cairo.Format.ARGB32, width, height);
ctx = new Cairo.Context(cached_surface);
width = int.min(width, max_width);
}
double radius = 3 * base_factor;
double degrees = Math.PI / 180.0;
ctx.new_sub_path();
ctx.arc(width - radius, radius, radius, -90 * degrees, 0 * degrees);
ctx.arc(width - radius, height - radius, radius, 0 * degrees, 90 * degrees);
ctx.arc(radius, height - radius, radius, 90 * degrees, 180 * degrees);
ctx.arc(radius, radius, radius, 180 * degrees, 270 * degrees);
ctx.close_path();
ctx.clip();
Cairo.Surface buffer = sub_surface(ctx, width, height);
ctx.set_source_surface(buffer, 0, 0);
ctx.paint();
if (use_image_surface == 1) {
ctx_in.set_source_surface(ctx.get_target(), 0, 0);
ctx_in.paint();
ctx_in.set_source_rgb(0, 0, 0);
}
return true;
}
private Cairo.Surface sub_surface(Cairo.Context ctx, int width, int height) {
Cairo.Surface buffer = new Cairo.Surface.similar(ctx.get_target(), Cairo.Content.COLOR_ALPHA, width, height);
Cairo.Context bufctx = new Cairo.Context(buffer);
double w_scale = (double) width / image_width;
double h_scale = (double) height / image_height;
double scale = double.max(w_scale, h_scale);
bufctx.scale(scale, scale);
double x_off = 0, y_off = 0;
if (scale == h_scale) {
x_off = (width / scale - image_width) / 2.0;
} else {
y_off = (height / scale - image_height) / 2.0;
}
Gdk.cairo_set_source_pixbuf(bufctx, image, 0, 0);
bufctx.get_source().set_filter(Cairo.Filter.BILINEAR);
bufctx.paint();
bufctx.set_source_rgb(0, 0, 0);
return buffer;
}
public override void measure(Orientation orientation, int for_size, out int minimum, out int natural, out int minimum_baseline, out int natural_baseline) {
double natural_width = -1, natural_height = -1;
calculate_size(ref natural_width, ref natural_height);
public override void measure(Gtk.Widget widget, Orientation orientation, int for_size, out int minimum, out int natural, out int minimum_baseline, out int natural_baseline) {
minimum_baseline = -1;
natural_baseline = -1;
int width, height;
measure_target_size(widget, out width, out height);
if (orientation == Orientation.HORIZONTAL) {
natural = (int) Math.ceil(natural_width);
minimum = min_width;
natural = width;
} else if (for_size == -1) {
minimum = min_height;
natural = height;
} else {
natural = (int) Math.ceil(natural_height);
minimum = natural = height * for_size / width;
}
if (for_size == -1) {
minimum = 0;
} else {
if (orientation == Orientation.HORIZONTAL) {
double exact_width = -1, exact_height = for_size;
calculate_size(ref exact_width, ref exact_height);
minimum = int.max((int)Math.floor(exact_width), min_width);
} else {
double exact_width = for_size, exact_height = -1;
calculate_size(ref exact_width, ref exact_height);
minimum = int.max((int)Math.floor(exact_height), min_height);
}
}
minimum_baseline = natural_baseline = -1;
}
public override SizeRequestMode get_request_mode() {
public override void allocate(Gtk.Widget widget, int width, int height, int baseline) {
Widget child = widget.get_first_child();
while (child != null) {
if (child.should_layout()) {
child.allocate(width, height, baseline, null);
}
child = child.get_next_sibling();
}
}
public override SizeRequestMode get_request_mode(Gtk.Widget widget) {
return SizeRequestMode.HEIGHT_FOR_WIDTH;
}
}
class FixedRatioPicture : Gtk.Widget {
public int min_width { get { return layout.min_width; } set { layout.min_width = value; } }
public int target_width { get { return layout.target_width; } set { layout.target_width = value; } }
public int max_width { get { return layout.max_width; } set { layout.max_width = value; } }
public int min_height { get { return layout.min_height; } set { layout.min_height = value; } }
public int target_height { get { return layout.target_height; } set { layout.target_height = value; } }
public int max_height { get { return layout.max_height; } set { layout.max_height = value; } }
public File file { get { return inner.file; } set { inner.file = value; } }
public Gdk.Paintable paintable { get { return inner.paintable; } set { inner.paintable = value; } }
#if GTK_4_8 && VALA_0_58
public Gtk.ContentFit content_fit { get { return inner.content_fit; } set { inner.content_fit = value; } }
#endif
private Gtk.Picture inner = new Gtk.Picture();
private FixedRatioLayout layout = new FixedRatioLayout();
public FixedRatioPicture() {
layout_manager = layout;
inner.insert_after(this, null);
}
public override void dispose() {
inner.unparent();
base.dispose();
}
}
}