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js: Make resizing of puzzles work properly again

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This requires looking at the CSS size of the puzzle canvas rather than
its internal size, and then adjusting the new size to account for the
device pixel ratio.
This commit is contained in:
Ben Harris
2022-10-22 18:50:34 +01:00
parent 989c6defb0
commit 0254a163ff
1 changed files with 7 additions and 5 deletions
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12
emccpre.js
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@ -482,10 +482,10 @@ function initPuzzle() {
resize_handle.onmousedown = function(event) {
if (event.button == 0) {
var xy = element_coords(onscreen_canvas);
resize_xbase = xy.x + onscreen_canvas.width / 2;
resize_xbase = xy.x + onscreen_canvas.offsetWidth / 2;
resize_ybase = xy.y;
resize_xoffset = xy.x + onscreen_canvas.width - event.pageX;
resize_yoffset = xy.y + onscreen_canvas.height - event.pageY;
resize_xoffset = xy.x + onscreen_canvas.offsetWidth - event.pageX;
resize_yoffset = xy.y + onscreen_canvas.offsetHeight - event.pageY;
} else {
restore_pending = true;
}
@ -494,8 +494,10 @@ function initPuzzle() {
};
window.addEventListener("mousemove", function(event) {
if (resize_xbase !== null && resize_ybase !== null) {
resize_puzzle((event.pageX + resize_xoffset - resize_xbase) * 2,
(event.pageY + resize_yoffset - resize_ybase));
var dpr = window.devicePixelRatio || 1;
resize_puzzle(
(event.pageX + resize_xoffset - resize_xbase) * dpr * 2,
(event.pageY + resize_yoffset - resize_ybase) * dpr);
event.preventDefault();
// Chrome insists on selecting text during a resize drag
// no matter what I do