From 9a0bbb8e95196d02e71a2b63c849a9201305290a Mon Sep 17 00:00:00 2001
From: KikooDX <kikoodx@paranoici.org>
Date: Fri, 26 Feb 2021 10:30:22 +0100
Subject: [PATCH] Mouse behavior for graphical tablet (#1)

---
 src/conf.zig | 4 ++++
 src/main.zig | 8 ++++++--
 2 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/src/conf.zig b/src/conf.zig
index 6fb12b3..5d96dbc 100644
--- a/src/conf.zig
+++ b/src/conf.zig
@@ -21,6 +21,10 @@ fn col(r: u8, g: u8, b: u8) ray.Color {
 pub const mouse_enabled: bool = true;
 pub const mouse_left_btn: c_int = 0;
 pub const mouse_right_btn: c_int = 1;
+// Set to true for better graphical tablet experience.
+// * false: click to enter, draw, click to exit.
+// * true: click to enter, draw, release to exit.
+pub const mouse_graphic_tablet: bool = false;
 
 pub const theme = .{
     .background = ray.BLACK,
diff --git a/src/main.zig b/src/main.zig
index 747277e..af90112 100644
--- a/src/main.zig
+++ b/src/main.zig
@@ -207,11 +207,15 @@ pub fn main() void {
             }
 
             const left_click: bool = ray.IsMouseButtonPressed(conf.mouse_left_btn);
+            const left_release: bool = ray.IsMouseButtonReleased(conf.mouse_left_btn);
             const right_click: bool = ray.IsMouseButtonPressed(conf.mouse_right_btn);
+            const right_release: bool = ray.IsMouseButtonReleased(conf.mouse_right_btn);
             const click: bool = left_click or right_click;
+            const release: bool = left_release or right_release;
+            const end_sel_event = if (conf.mouse_graphic_tablet) release else click;
 
-            // If click, get out of current mode and apply changes if necessary.
-            if (click and mouse.mode != Mouse.MouseMode.idle) {
+            // When end selection event, get out of current mode and apply changes if necessary.
+            if (end_sel_event and mouse.mode != Mouse.MouseMode.idle) {
                 defer mouse.mode = Mouse.MouseMode.wait;
 
                 // Select area.