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mach: flesh out mach.Event (#377)

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* Flesh out mach.Event
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Jamie Brandon 2022-07-01 16:47:06 -07:00 • committed by GitHub
parent da046f340d
commit 5bb740f89e
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4 changed files with 218 additions and 66 deletions
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104
src/platform/wasm.zig
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@ -38,6 +38,9 @@ pub const Platform = struct {
last_window_size: structs.Size,
last_framebuffer_size: structs.Size,
last_cursor_position: structs.WindowPos,
last_key_mods: structs.KeyMods,
pub fn init(allocator: std.mem.Allocator, eng: *Engine) !Platform {
var selector = [1]u8{0} ** 15;
const id = js.machCanvasInit(&selector[0]);
@ -53,6 +56,20 @@ pub const Platform = struct {
.width = js.machCanvasGetFramebufferWidth(id),
.height = js.machCanvasGetFramebufferHeight(id),
},
// TODO initialize these properly
.last_cursor_position = .{
.x = 0,
.y = 0,
},
.last_key_mods = .{
.shift = false,
.control = false,
.alt = false,
.super = false,
.caps_lock = false,
.num_lock = false,
},
};
try platform.setOptions(eng.options);
@ -117,38 +134,93 @@ pub const Platform = struct {
return js.machHasEvent();
}
pub fn pollEvent(_: *Platform) ?structs.Event {
pub fn pollEvent(platform: *Platform) ?structs.Event {
const event_type = js.machEventShift();
return switch (event_type) {
1 => structs.Event{
.key_press = .{ .key = @intToEnum(enums.Key, js.machEventShift()) },
1, 2 => key_down: {
const key = @intToEnum(enums.Key, js.machEventShift());
switch (key) {
.left_shift, .right_shift => platform.last_key_mods.shift = true,
.left_control, .right_control => platform.last_key_mods.control = true,
.left_alt, .right_alt => platform.last_key_mods.alt = true,
.left_super, .right_super => platform.last_key_mods.super = true,
.caps_lock => platform.last_key_mods.caps_lock = true,
.num_lock => platform.last_key_mods.num_lock = true,
else => {},
}
break :key_down switch (event_type) {
1 => structs.Event{
.key_press = .{
.key = key,
.mods = platform.last_key_mods,
},
},
2 => structs.Event{
.key_repeat = .{
.key = key,
.mods = platform.last_key_mods,
},
},
else => unreachable,
};
},
2 => structs.Event{
.key_release = .{ .key = @intToEnum(enums.Key, js.machEventShift()) },
3 => key_release: {
const key = @intToEnum(enums.Key, js.machEventShift());
switch (key) {
.left_shift, .right_shift => platform.last_key_mods.shift = false,
.left_control, .right_control => platform.last_key_mods.control = false,
.left_alt, .right_alt => platform.last_key_mods.alt = false,
.left_super, .right_super => platform.last_key_mods.super = false,
.caps_lock => platform.last_key_mods.caps_lock = false,
.num_lock => platform.last_key_mods.num_lock = false,
else => {},
}
break :key_release structs.Event{
.key_release = .{
.key = key,
.mods = platform.last_key_mods,
},
};
},
3 => structs.Event{
.mouse_motion = .{
.x = @intToFloat(f64, js.machEventShift()),
.y = @intToFloat(f64, js.machEventShift()),
},
},
4 => structs.Event{
.mouse_press = .{
.button = toMachButton(js.machEventShift()),
},
4 => mouse_motion: {
const x = @intToFloat(f64, js.machEventShift());
const y = @intToFloat(f64, js.machEventShift());
platform.last_cursor_position = .{
.x = x,
.y = y,
};
break :mouse_motion structs.Event{
.mouse_motion = .{
.pos = .{
.x = x,
.y = y,
},
},
};
},
5 => structs.Event{
.mouse_release = .{
.mouse_press = .{
.button = toMachButton(js.machEventShift()),
.pos = platform.last_cursor_position,
.mods = platform.last_key_mods,
},
},
6 => structs.Event{
.mouse_release = .{
.button = toMachButton(js.machEventShift()),
.pos = platform.last_cursor_position,
.mods = platform.last_key_mods,
},
},
7 => structs.Event{
.mouse_scroll = .{
.xoffset = @floatCast(f32, sign(js.machEventShiftFloat())),
.yoffset = @floatCast(f32, sign(js.machEventShiftFloat())),
},
},
8 => structs.Event.focus_gained,
9 => structs.Event.focus_lost,
else => null,
};
}