zig/mach
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

mach: wasm: Adjust width and height for HiDpi/Retina

Browse source 
Also implements getFramebufferSize() and getWindowSize() properly.
This commit is contained in:
iddev5 2022-05-23 23:49:11 +05:30 • committed by Stephen Gutekanst
parent 017b469e2f
commit 488131ecbb
2 changed files with 31 additions and 12 deletions
Download patch file Download diff file Expand all files Collapse all files

26
src/mach.js
View file

@ -42,8 +42,10 @@ const mach = {
machCanvasInit(width, height, id) {
let canvas = document.createElement("canvas");
canvas.id = "#mach-canvas-" + mach.canvases.length;
canvas.width = width;
canvas.height = height;
canvas.style.width = width + "px";
canvas.style.height = height + "px";
canvas.width = Math.floor(width * window.devicePixelRatio);
canvas.height = Math.floor(height * window.devicePixelRatio);
canvas.tabIndex = 1;
mach.setString(canvas.id, id);
@ -71,17 +73,29 @@ const mach = {
machCanvasSetSize(canvas, width, height) {
const cv = mach.canvases[canvas];
if (width > 0 && height > 0) {
cv.canvas.width = width;
cv.canvas.height = height;
cv.canvas.style.width = width + "px";
cv.canvas.style.height = height + "px";
cv.canvas.width = width * window.devicePixelRatio;
cv.canvas.height = height * window.devicePixelRatio;
}
},
machCanvasGetWidth(canvas) {
machCanvasGetWindowWidth(canvas) {
const cv = mach.canvases[canvas];
return cv.canvas.width / window.devicePixelRatio;
},
machCanvasGetWindowHeight(canvas) {
const cv = mach.canvases[canvas];
return cv.canvas.height / window.devicePixelRatio;
},
machCanvasGetFramebufferWidth(canvas) {
const cv = mach.canvases[canvas];
return cv.canvas.width;
},
machCanvasGetHeight(canvas) {
machCanvasGetFramebufferHeight(canvas) {
const cv = mach.canvases[canvas];
return cv.canvas.height;
},

17
src/wasm.zig
View file

@ -9,8 +9,10 @@ const js = struct {
extern fn machCanvasDeinit(canvas: CanvasId) void;
extern fn machCanvasSetTitle(canvas: CanvasId, title: [*]const u8, len: u32) void;
extern fn machCanvasSetSize(canvas: CanvasId, width: u32, height: u32) void;
extern fn machCanvasGetWidth(canvas: CanvasId) u32;
extern fn machCanvasGetHeight(canvas: CanvasId) u32;
extern fn machCanvasGetWindowWidth(canvas: CanvasId) u32;
extern fn machCanvasGetWindowHeight(canvas: CanvasId) u32;
extern fn machCanvasGetFramebufferWidth(canvas: CanvasId) u32;
extern fn machCanvasGetFramebufferHeight(canvas: CanvasId) u32;
extern fn machPerfNow() f64;
extern fn machLog(str: [*]const u8, len: u32) void;
@ -41,14 +43,17 @@ pub const Core = struct {
pub fn setShouldClose(_: *Core, _: bool) void {}
pub fn getFramebufferSize(_: *Core) !structs.Size {
return structs.Size{ .width = 0, .height = 0 };
pub fn getFramebufferSize(core: *Core) !structs.Size {
return structs.Size{
.width = js.machCanvasGetFramebufferWidth(core.id),
.height = js.machCanvasGetFramebufferHeight(core.id),
};
}
pub fn getWindowSize(core: *Core) !structs.Size {
return structs.Size{
.width = js.machCanvasGetWidth(core.id),
.height = js.machCanvasGetHeight(core.id),
.width = js.machCanvasGetWindowWidth(core.id),
.height = js.machCanvasGetWindowHeight(core.id),
};
}