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refactor(gui): clean-up pixel to cell coordinate conversions

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This commit is contained in:
CJ van den Berg 2026-04-01 10:08:35 +02:00
parent ce85a73063
commit 45db14f894
Signed by: neurocyte
GPG key ID: 8EB1E1BB660E3FB9
1 changed files with 37 additions and 32 deletions
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69
src/gui/wio/app.zig
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@ -205,6 +205,26 @@ pub fn requestAttention() void {
// ── Internal helpers (wio thread only) ────────────────────────────────────
const CellPos = struct {
col: i32,
row: i32,
xoff: i32,
yoff: i32,
};
fn pixelToCellPos(pos: wio.Position) CellPos {
const x: i32 = @intCast(pos.x);
const y: i32 = @intCast(pos.y);
const cw: i32 = wio_font.cell_size.x;
const ch: i32 = wio_font.cell_size.y;
return .{
.col = @divTrunc(x, cw),
.row = @divTrunc(y, ch),
.xoff = @mod(x, cw),
.yoff = @mod(y, ch),
};
}
// Reload wio_font from current settings. Called only from the wio thread.
fn reloadFont() void {
const name = if (font_name_len > 0) font_name_buf[0..font_name_len] else "monospace";
@ -318,20 +338,15 @@ fn wioLoop() void {
held_buttons.press(btn);
const mods = input_translate.Mods.fromButtons(held_buttons);
if (input_translate.mouseButtonId(btn)) |mb_id| {
const col: i32 = @intCast(mouse_pos.x);
const row: i32 = @intCast(mouse_pos.y);
const col_cell: i32 = @intCast(@divTrunc(col, wio_font.cell_size.x));
const row_cell: i32 = @intCast(@divTrunc(row, wio_font.cell_size.y));
const xoff: i32 = @intCast(@mod(col, wio_font.cell_size.x));
const yoff: i32 = @intCast(@mod(row, wio_font.cell_size.y));
const cp = pixelToCellPos(mouse_pos);
tui_pid.send(.{
"RDR", "B",
@as(u8, 1), // press
mb_id,
col_cell,
row_cell,
xoff,
yoff,
cp.col,
cp.row,
cp.xoff,
cp.yoff,
}) catch {};
} else {
const base_cp = input_translate.codepointFromButton(btn, .{});
@ -351,20 +366,15 @@ fn wioLoop() void {
held_buttons.release(btn);
const mods = input_translate.Mods.fromButtons(held_buttons);
if (input_translate.mouseButtonId(btn)) |mb_id| {
const col: i32 = @intCast(mouse_pos.x);
const row: i32 = @intCast(mouse_pos.y);
const col_cell: i32 = @intCast(@divTrunc(col, wio_font.cell_size.x));
const row_cell: i32 = @intCast(@divTrunc(row, wio_font.cell_size.y));
const xoff: i32 = @intCast(@mod(col, wio_font.cell_size.x));
const yoff: i32 = @intCast(@mod(row, wio_font.cell_size.y));
const cp = pixelToCellPos(mouse_pos);
tui_pid.send(.{
"RDR", "B",
@as(u8, 3), // release
mb_id,
col_cell,
row_cell,
xoff,
yoff,
cp.col,
cp.row,
cp.xoff,
cp.yoff,
}) catch {};
} else {
const base_cp = input_translate.codepointFromButton(btn, .{});
@ -383,27 +393,22 @@ fn wioLoop() void {
},
.mouse => |pos| {
mouse_pos = pos;
const col_cell: i32 = @intCast(@divTrunc(@as(i32, @intCast(pos.x)), wio_font.cell_size.x));
const row_cell: i32 = @intCast(@divTrunc(@as(i32, @intCast(pos.y)), wio_font.cell_size.y));
const xoff: i32 = @intCast(@mod(@as(i32, @intCast(pos.x)), wio_font.cell_size.x));
const yoff: i32 = @intCast(@mod(@as(i32, @intCast(pos.y)), wio_font.cell_size.y));
const cp = pixelToCellPos(pos);
if (input_translate.heldMouseButtonId(held_buttons)) |mb_id| {
tui_pid.send(.{ "RDR", "D", mb_id, col_cell, row_cell, xoff, yoff }) catch {};
tui_pid.send(.{ "RDR", "D", mb_id, cp.col, cp.row, cp.xoff, cp.yoff }) catch {};
} else {
tui_pid.send(.{ "RDR", "M", col_cell, row_cell, xoff, yoff }) catch {};
tui_pid.send(.{ "RDR", "M", cp.col, cp.row, cp.xoff, cp.yoff }) catch {};
}
},
.scroll_vertical => |dy| {
const btn_id: u8 = if (dy < 0) 64 else 65; // up / down scroll
const col_cell: i32 = @intCast(@divTrunc(@as(i32, @intCast(mouse_pos.x)), wio_font.cell_size.x));
const row_cell: i32 = @intCast(@divTrunc(@as(i32, @intCast(mouse_pos.y)), wio_font.cell_size.y));
tui_pid.send(.{ "RDR", "B", @as(u8, 1), btn_id, col_cell, row_cell, @as(i32, 0), @as(i32, 0) }) catch {};
const cp = pixelToCellPos(mouse_pos);
tui_pid.send(.{ "RDR", "B", @as(u8, 1), btn_id, cp.col, cp.row, @as(i32, 0), @as(i32, 0) }) catch {};
},
.scroll_horizontal => |dx| {
const btn_id: u8 = if (dx < 0) 66 else 67; // left / right scroll
const col_cell: i32 = @intCast(@divTrunc(@as(i32, @intCast(mouse_pos.x)), wio_font.cell_size.x));
const row_cell: i32 = @intCast(@divTrunc(@as(i32, @intCast(mouse_pos.y)), wio_font.cell_size.y));
tui_pid.send(.{ "RDR", "B", @as(u8, 1), btn_id, col_cell, row_cell, @as(i32, 0), @as(i32, 0) }) catch {};
const cp = pixelToCellPos(mouse_pos);
tui_pid.send(.{ "RDR", "B", @as(u8, 1), btn_id, cp.col, cp.row, @as(i32, 0), @as(i32, 0) }) catch {};
},
.focused => window.enableTextInput(.{}),
.unfocused => window.disableTextInput(),