Merge pull request #20 from guzba/master

double, triple, quadruple click

src/windy/common.nim

@@ -15,6 +15,9 @@ type
     MouseLeft
     MouseRight
     MouseMiddle
+    DoubleClick
+    TripleClick
+    QuadrupleClick
     Key0
     Key1
     Key2
@@ -61,7 +64,7 @@ type
     KeyBackslash
     KeyCapsLock
     KeySemicolon
-    KeyApostraphe
+    KeyApostrophe
     KeyEnter
     KeyLeftShift
     KeyComma
@@ -116,7 +119,7 @@ type
     NumpadDecimal
     NumpadEnter
     NumpadAdd
-    NumbadSubtract
+    NumpadSubtract
     NumpadMultiply
     NumpadDivide
     NumpadEqual

src/windy/platforms/win32/platform.nim

@@ -1,4 +1,4 @@
-import ../../common, ../../internal, unicode, utils, vmath, windefs
+import ../../common, ../../internal, times, unicode, utils, vmath, windefs
 
 const
   windowClassName = "WINDY0"
@@ -80,6 +80,8 @@ var
   onQuitRequest*: Callback
 
   initialized: bool
+  doubleClickInterval: float64
+  prevClickTimes: array[3, float64]
   windows: seq[Window]
 
 proc indexForHandle(windows: seq[Window], hWnd: HWND): int =
@@ -101,7 +103,7 @@ proc registerWindowClass(windowClassName: string, wndProc: WNDPROC) =
 
   var wc: WNDCLASSEXW
   wc.cbSize = sizeof(WNDCLASSEXW).UINT
-  wc.style = CS_HREDRAW or CS_VREDRAW or CS_DBLCLKS
+  wc.style = CS_HREDRAW or CS_VREDRAW
   wc.lpfnWndProc = wndProc
   wc.hInstance = GetModuleHandleW(nil)
   wc.hCursor = LoadCursorW(0, IDC_ARROW)
@@ -325,7 +327,35 @@ proc handleButtonPress(window: Window, button: Button) =
   if window.onButtonPress != nil:
     window.onButtonPress(button)
 
+  if button == MouseLeft:
+    let
+      clickTime = epochTime()
+      clickIntervals = [
+        clickTime - prevClickTimes[0],
+        clickTime - prevClickTimes[1],
+        clickTime - prevClickTimes[2]
+      ]
+
+    if clickIntervals[0] <= doubleClickInterval:
+      window.handleButtonPress(DoubleClick)
+      if clickIntervals[1] <= 2 * doubleClickInterval:
+        window.handleButtonPress(TripleClick)
+        if clickIntervals[2] <= 3 * doubleClickInterval:
+          window.handleButtonPress(QuadrupleClick)
+
+    prevClickTimes[2] = prevClickTimes[1]
+    prevClickTimes[1] = prevClickTimes[0]
+    prevClickTimes[0] = clickTime
+
 proc handleButtonRelease(window: Window, button: Button) =
+  if button == MouseLeft:
+    if QuadrupleClick in window.buttonDown:
+      window.handleButtonRelease(QuadrupleClick)
+    if TripleClick in window.buttonDown:
+      window.handleButtonRelease(TripleClick)
+    if DoubleClick in window.buttonDown:
+      window.handleButtonRelease(DoubleClick)
+
   window.buttonDown.excl button
   window.buttonReleased.incl button
   if window.onButtonRelease != nil:
@@ -472,6 +502,7 @@ proc init*() =
   discard SetProcessDpiAwarenessContext(DPI_AWARENESS_CONTEXT_PER_MONITOR_AWARE_V2)
   loadOpenGL()
   registerWindowClass(windowClassName, wndProc)
+  doubleClickInterval = GetDoubleClickTime().float64 / 1000
   initialized = true
 
 proc pollEvents*() =

src/windy/platforms/win32/utils.nim

@@ -78,7 +78,7 @@ const scancodeToButton* = block:
   s[0x02b] = KeyBackslash
   s[0x03a] = KeyCapsLock
   s[0x027] = KeySemicolon
-  s[0x028] = KeyApostraphe
+  s[0x028] = KeyApostrophe
   s[0x01c] = KeyEnter
   s[0x02a] = KeyLeftShift
   s[0x033] = KeyComma
@@ -133,7 +133,7 @@ const scancodeToButton* = block:
   s[0x053] = NumpadDecimal
   s[0x11c] = NumpadEnter
   s[0x04e] = NumpadAdd
-  s[0x04a] = NumbadSubtract
+  s[0x04a] = NumpadSubtract
   s[0x037] = NumpadMultiply
   s[0x135] = NumpadDivide
   s[0x059] = NumpadEqual

src/windy/platforms/win32/windefs.nim

@@ -555,6 +555,8 @@ proc SendMessageW*(
   lParam: LPARAM
 ): LRESULT {.importc, stdcall, dynlib: "User32".}
 
+proc GetDoubleClickTime*(): UINT {.importc, stdcall, dynlib: "User32".}
+
 proc ChoosePixelFormat*(
   hdc: HDC,
   ppfd: ptr PIXELFORMATDESCRIPTOR