95425aa73fit seems like `gpa` has become pretty much the universally agreed upon name for your... gpa, so we're renaming.
60 lines
2.3 KiB
Zig
60 lines
2.3 KiB
Zig
// SPDX-FileCopyrightText: 2026 Ben Buhse <me@benbuhse.email>
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//
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// SPDX-License-Identifier: GPL-3.0-only
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const WallpaperImage = @This();
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image: *pixman.Image,
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pixels: std.ArrayList(u32),
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// TODO: Make image_path nullable, if null, do a single color with a single_pixel_buffer instead(?)
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pub fn create(image_path: []const u8) !*WallpaperImage {
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var wallpaper_image = try utils.gpa.create(WallpaperImage);
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errdefer utils.gpa.destroy(wallpaper_image);
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var read_buf: [zigimg.io.DEFAULT_BUFFER_SIZE]u8 = undefined;
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var image = try zigimg.Image.fromFilePath(utils.gpa, image_path, &read_buf);
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defer image.deinit(utils.gpa);
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// We don't want to deal with all the possible formats,
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// so let's just convert to one we can use with pixman.
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if (image.pixelFormat() != .rgba32) {
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try image.convert(utils.gpa, .rgba32);
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}
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log.debug("image loaded ({}x{})", .{ image.width, image.height });
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const pixels = image.pixels.rgba32;
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// We have to manually convert to argb --
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// It's only guaranteed that Wayland compositors will have xrgb and argb support but zigimg doesn't have either of those.
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wallpaper_image.pixels = try std.ArrayList(u32).initCapacity(utils.gpa, pixels.len);
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errdefer wallpaper_image.pixels.deinit(utils.gpa);
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for (0..pixels.len) |i| {
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const a: u32 = @intCast(pixels[i].a);
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const r: u32 = @intCast(pixels[i].r);
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const g: u32 = @intCast(pixels[i].g);
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const b: u32 = @intCast(pixels[i].b);
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const new_val: u32 = (a << 24) + (r << 16) + (g << 8) + b;
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wallpaper_image.pixels.appendAssumeCapacity(new_val);
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}
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wallpaper_image.image = pixman.Image.createBits(.a8r8g8b8, @intCast(image.width), @intCast(image.height), @ptrCast(@alignCast(wallpaper_image.pixels.items.ptr)), @intCast(image.width * image.pixelFormat().pixelStride())) orelse return error.FailedToCreatePixmanImage;
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return wallpaper_image;
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}
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pub fn destroy(wallpaper_image: *WallpaperImage) void {
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_ = wallpaper_image.image.unref();
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wallpaper_image.pixels.deinit(utils.gpa);
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utils.gpa.destroy(wallpaper_image);
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}
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const std = @import("std");
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const pixman = @import("pixman");
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const zigimg = @import("zigimg");
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const utils = @import("utils.zig");
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const log = std.log.scoped(.WallpaperImage);
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