drag event

2025-10-30 13:42:34 -04:00
parent 7bbd02d687
commit 6e9b17b7dc
3 changed files with 650 additions and 5 deletions
--- a/testing/tests/29_drag_event_tests.lua
+++ b/testing/tests/29_drag_event_tests.lua
@@ -0,0 +1,282 @@
+-- Drag Event Tests
+-- Tests for the new drag event functionality
+
+package.path = package.path .. ";?.lua"
+
+local lu = require("testing.luaunit")
+require("testing.loveStub")
+local FlexLove = require("FlexLove")
+local Gui = FlexLove.Gui
+
+TestDragEvent = {}
+
+function TestDragEvent:setUp()
+  -- Initialize GUI before each test
+  Gui.init({ baseScale = { width = 1920, height = 1080 } })
+  love.window.setMode(1920, 1080)
+  Gui.resize(1920, 1080) -- Recalculate scale factors after setMode
+end
+
+function TestDragEvent:tearDown()
+  -- Clean up after each test
+  Gui.destroy()
+end
+
+-- Test 1: Drag event is fired when mouse moves while pressed
+function TestDragEvent:test_drag_event_fired_on_mouse_movement()
+  local dragEventReceived = false
+  local dragEvent = nil
+
+  local element = Gui.new({
+    x = 100,
+    y = 100,
+    width = 200,
+    height = 100,
+    callback = function(el, event)
+      if event.type == "drag" then
+        dragEventReceived = true
+        dragEvent = event
+      end
+    end,
+  })
+
+  -- Simulate mouse press
+  love.mouse.setPosition(150, 150)
+  love.mouse.setDown(1, true)
+  element:update(0.016)
+
+  -- Move mouse while pressed (drag)
+  love.mouse.setPosition(160, 155)
+  element:update(0.016)
+
+  lu.assertTrue(dragEventReceived, "Drag event should be fired when mouse moves while pressed")
+  lu.assertNotNil(dragEvent, "Drag event object should exist")
+end
+
+-- Test 2: Drag event contains dx and dy fields
+function TestDragEvent:test_drag_event_contains_delta_values()
+  local dragEvent = nil
+
+  local element = Gui.new({
+    x = 100,
+    y = 100,
+    width = 200,
+    height = 100,
+    callback = function(el, event)
+      if event.type == "drag" then
+        dragEvent = event
+      end
+    end,
+  })
+
+  -- Simulate mouse press at (150, 150)
+  love.mouse.setPosition(150, 150)
+  love.mouse.setDown(1, true)
+  element:update(0.016)
+
+  -- Move mouse to (160, 155) - delta should be (10, 5)
+  love.mouse.setPosition(160, 155)
+  element:update(0.016)
+
+  lu.assertNotNil(dragEvent, "Drag event should be received")
+  lu.assertNotNil(dragEvent.dx, "Drag event should have dx field")
+  lu.assertNotNil(dragEvent.dy, "Drag event should have dy field")
+  lu.assertEquals(dragEvent.dx, 10, "dx should be 10 (160 - 150)")
+  lu.assertEquals(dragEvent.dy, 5, "dy should be 5 (155 - 150)")
+end
+
+-- Test 3: Drag event updates dx/dy as mouse continues to move
+function TestDragEvent:test_drag_event_updates_delta_continuously()
+  local dragEvents = {}
+
+  local element = Gui.new({
+    x = 100,
+    y = 100,
+    width = 200,
+    height = 100,
+    callback = function(el, event)
+      if event.type == "drag" then
+        table.insert(dragEvents, { dx = event.dx, dy = event.dy })
+      end
+    end,
+  })
+
+  -- Press at (150, 150)
+  love.mouse.setPosition(150, 150)
+  love.mouse.setDown(1, true)
+  element:update(0.016)
+
+  -- Move to (160, 155)
+  love.mouse.setPosition(160, 155)
+  element:update(0.016)
+
+  -- Move to (170, 160)
+  love.mouse.setPosition(170, 160)
+  element:update(0.016)
+
+  lu.assertEquals(#dragEvents, 2, "Should receive 2 drag events")
+  lu.assertEquals(dragEvents[1].dx, 10, "First drag dx should be 10")
+  lu.assertEquals(dragEvents[1].dy, 5, "First drag dy should be 5")
+  lu.assertEquals(dragEvents[2].dx, 20, "Second drag dx should be 20 (170 - 150)")
+  lu.assertEquals(dragEvents[2].dy, 10, "Second drag dy should be 10 (160 - 150)")
+end
+
+-- Test 4: No drag event when mouse doesn't move
+function TestDragEvent:test_no_drag_event_when_mouse_stationary()
+  local dragEventCount = 0
+
+  local element = Gui.new({
+    x = 100,
+    y = 100,
+    width = 200,
+    height = 100,
+    callback = function(el, event)
+      if event.type == "drag" then
+        dragEventCount = dragEventCount + 1
+      end
+    end,
+  })
+
+  -- Press at (150, 150)
+  love.mouse.setPosition(150, 150)
+  love.mouse.setDown(1, true)
+  element:update(0.016)
+
+  -- Update again without moving mouse
+  element:update(0.016)
+  element:update(0.016)
+
+  lu.assertEquals(dragEventCount, 0, "Should not receive drag events when mouse doesn't move")
+end
+
+-- Test 5: Drag tracking is cleaned up on release
+function TestDragEvent:test_drag_tracking_cleaned_up_on_release()
+  local dragEvents = {}
+
+  local element = Gui.new({
+    x = 100,
+    y = 100,
+    width = 200,
+    height = 100,
+    callback = function(el, event)
+      if event.type == "drag" then
+        table.insert(dragEvents, { dx = event.dx, dy = event.dy })
+      end
+    end,
+  })
+
+  -- First drag sequence
+  love.mouse.setPosition(150, 150)
+  love.mouse.setDown(1, true)
+  element:update(0.016)
+
+  love.mouse.setPosition(160, 155)
+  element:update(0.016)
+
+  -- Release
+  love.mouse.setDown(1, false)
+  element:update(0.016)
+
+  -- Second drag sequence - should start fresh
+  love.mouse.setPosition(150, 150)
+  love.mouse.setDown(1, true)
+  element:update(0.016)
+
+  love.mouse.setPosition(155, 152)
+  element:update(0.016)
+
+  lu.assertEquals(#dragEvents, 2, "Should receive 2 drag events total")
+  lu.assertEquals(dragEvents[1].dx, 10, "First drag dx should be 10")
+  lu.assertEquals(dragEvents[2].dx, 5, "Second drag dx should be 5 (new drag start)")
+end
+
+-- Test 6: Drag works with different mouse buttons
+function TestDragEvent:test_drag_works_with_different_buttons()
+  local dragEvents = {}
+
+  local element = Gui.new({
+    x = 100,
+    y = 100,
+    width = 200,
+    height = 100,
+    callback = function(el, event)
+      if event.type == "drag" then
+        table.insert(dragEvents, { button = event.button, dx = event.dx })
+      end
+    end,
+  })
+
+  -- Right button drag
+  -- Make sure no other buttons are down
+  love.mouse.setDown(1, false)
+  love.mouse.setDown(3, false)
+
+  love.mouse.setPosition(150, 150)
+  love.mouse.setDown(2, true)
+  element:update(0.016)
+
+  love.mouse.setPosition(160, 150)
+  element:update(0.016)
+
+  lu.assertEquals(#dragEvents, 1, "Should receive drag event for right button")
+  lu.assertEquals(dragEvents[1].button, 2, "Drag event should be for button 2")
+  lu.assertEquals(dragEvents[1].dx, 10, "Drag dx should be 10")
+end
+
+-- Test 7: Drag event contains correct mouse position
+function TestDragEvent:test_drag_event_contains_mouse_position()
+  local dragEvent = nil
+
+  local element = Gui.new({
+    x = 100,
+    y = 100,
+    width = 200,
+    height = 100,
+    callback = function(el, event)
+      if event.type == "drag" then
+        dragEvent = event
+      end
+    end,
+  })
+
+  love.mouse.setPosition(150, 150)
+  love.mouse.setDown(1, true)
+  element:update(0.016)
+
+  love.mouse.setPosition(175, 165)
+  element:update(0.016)
+
+  lu.assertNotNil(dragEvent, "Drag event should be received")
+  lu.assertEquals(dragEvent.x, 175, "Drag event x should match current mouse x")
+  lu.assertEquals(dragEvent.y, 165, "Drag event y should match current mouse y")
+end
+
+-- Test 8: No drag event when mouse leaves element
+function TestDragEvent:test_no_drag_when_mouse_leaves_element()
+  local dragEventCount = 0
+
+  local element = Gui.new({
+    x = 100,
+    y = 100,
+    width = 200,
+    height = 100,
+    callback = function(el, event)
+      if event.type == "drag" then
+        dragEventCount = dragEventCount + 1
+      end
+    end,
+  })
+
+  -- Press inside element
+  love.mouse.setPosition(150, 150)
+  love.mouse.setDown(1, true)
+  element:update(0.016)
+
+  -- Move outside element
+  love.mouse.setPosition(50, 50)
+  element:update(0.016)
+
+  lu.assertEquals(dragEventCount, 0, "Should not receive drag events when mouse leaves element")
+end
+
+lu.LuaUnit.run()