add material ui calculator :eyes:

examples/calculator/material_ui.nim

@@ -0,0 +1,204 @@
+# --- Material UI calculator --- #
+import
+  strutils,
+  nodesnim
+
+
+type
+  TokenType {.size: sizeof(int8).} = enum
+    NUMBER,
+    OPERATOR,
+    RPAR,
+    LPAR
+  Token = ref object
+    token_type: TokenType
+    token_value: string
+  TokenTree = seq[Token]
+
+proc parseQuery(query: string): TokenTree =
+  result = @[]
+  for c in query:
+    if c.isDigit() or c == '.':
+      if result.len > 0 and not result[^1].isNil() and result[^1].token_type == NUMBER:
+        result[^1].token_value &= $c
+      else:
+        result.add(Token(token_type: NUMBER, token_value: $c))
+    elif c in "+-/*":
+      result.add(Token(token_type: OPERATOR, token_value: $c))
+  when false:
+    for i in result:
+      echo i.token_value
+
+proc findHigh(tree: TokenTree): int =
+  result = -1
+  let tokens = "/*-+"
+  for token in tokens:
+    for i in tree.low..tree.high:
+      if tree[i].token_type == OPERATOR and tree[i].token_value == $token:
+        return i-1
+
+
+proc calculate(tree: TokenTree): float =
+  result = 0f
+
+  var
+    t = tree
+    index = t.findHigh()
+
+  while index != -1:
+    case t[index+1].token_value
+    of "/":
+      t[index].token_value = $(t[index].token_value.parseFloat() / t[index+2].token_value.parseFloat())
+    of "*":
+      t[index].token_value = $(t[index].token_value.parseFloat() * t[index+2].token_value.parseFloat())
+    of "-":
+      t[index].token_value = $(t[index].token_value.parseFloat() - t[index+2].token_value.parseFloat())
+    of "+":
+      t[index].token_value = $(t[index].token_value.parseFloat() + t[index+2].token_value.parseFloat())
+    t.del(index+2)
+    t.del(index+1)
+    index = t.findHigh()
+  if t.len == 1:
+    result = parseFloat(t[0].token_value)
+
+Window("material ui calculator", ((64+32)*4)+16, 480)
+env.setBackgroundColor(Color("#FAFAFA"))
+
+
+var
+  query: string = ""
+  big_font = loadFont(standard_font_path, 32)
+  medium = loadFont(standard_font_path, 24)
+  small = loadFont(standard_font_path, 16)
+
+build:
+  - Button number_button:
+    call setStyle(style({color: "#EEEEEE"}))
+    call resize(64+32, 64)
+    call setTextFont(loadFont(standard_font_path, 24))
+  - Button operator_button:
+    call setStyle(style({color: "#F5F5F5"}))
+    call resize(64+32, 51.2f)
+    call setTextFont(loadFont(standard_font_path, 22))
+
+number_button.normal_background.setStyle(style({background-color: "#424242"}))
+number_button.hover_background.setStyle(style({background-color: "#616161"}))
+number_button.press_background.setStyle(style({background-color: "#757575"}))
+
+operator_button.normal_background.setStyle(style({background-color: "#616161"}))
+operator_button.hover_background.setStyle(style({background-color: "#757575"}))
+operator_button.press_background.setStyle(style({background-color: "#9E9E9E"}))
+
+
+when false:
+  query = "123+1*5-200/10"
+  var
+    parsed = parseQuery(query)
+    calculated = calculate(parsed)
+
+
+build:
+  - Scene main:
+    - HBox hbox:
+      separator: 0
+      call setPadding(8, 8, 8, 8)
+      call move(0, 200)
+      - GridBox numbers:
+        separator: 0
+        call setRow(3)
+      - Vbox operators:
+        separator: 0
+    - Control result_back:
+      call resize(((64+32)*4), 200)
+      call move(8, 8)
+      call setStyle(style({
+        background-color: "#4DD0E1",
+        shadow: true,
+        shadow-offset: "0 8"
+      }))
+      - Label text:
+        call setTextFont(loadFont(standard_font_path, 32))
+        call setTextColor(Color("#fff"))
+        call setTextAlign(1, 1, 1, 1)
+        call setAnchor(1, 1, 1, 1)
+        call setSizeAnchor(1, 0.5)
+        call setPadding(16, 16, 16, 16)
+
+
+for i in 0..11:
+  numbers.addChild(number_button.duplicate())
+  if i < 9:
+    numbers.getChild(i).ButtonRef.setText($(i+1))
+    numbers.getChild(i).ButtonRef@onClick(self, x, y):
+      query &= self.ButtonRef.getText()
+      text.setText(query)
+  elif i == 9:
+    numbers.getChild(i).ButtonRef.setText(".")
+    numbers.getChild(i).ButtonRef@onClick(self, x, y):
+      if query.len > 0 and query[^1] != '.':
+        query &= self.ButtonRef.getText()
+        text.setText(query)
+  elif i == 10:
+    numbers.getChild(i).ButtonRef.setText("0")
+    numbers.getChild(i).ButtonRef@onClick(self, x, y):
+      if query.len > 0:
+        query &= self.ButtonRef.getText()
+        text.setText(query)
+  elif i == 11:
+    numbers.getChild(i).ButtonRef.setText("=")
+    numbers.getChild(i).ButtonRef@onClick(self, x, y):
+      if query.len > 0 and query[^1] in "/*-+":
+        query = "0"
+      var calculated = parseQuery(query).calculate()
+      query = $calculated
+      text.setText(query)
+
+for i in 0..4:
+  operators.addChild(operator_button.duplicate())
+  case i
+  of 0:
+    operators.getChild(i).ButtonRef.setText("DEL")
+    operators.getChild(i).ButtonRef@onClick(self, x, y):
+      if query.len > 0:
+        query = query[0..^2]
+        text.setText(query)
+  of 1:
+    operators.getChild(i).ButtonRef.setText("+")
+    operators.getChild(i).ButtonRef@onClick(self, x, y):
+      if query.len > 0:
+        if query[^1] notin "-+/*":
+          query &= "+"
+        else:
+          query = query[0..^2] & "+"
+        text.setText(query)
+  of 2:
+    operators.getChild(i).ButtonRef.setText("−")
+    operators.getChild(i).ButtonRef@onClick(self, x, y):
+      if query.len > 0:
+        if query[^1] notin "-+/*":
+          query &= "-"
+        else:
+          query = query[0..^2] & "-"
+        text.setText(query)
+  of 3:
+    operators.getChild(i).ButtonRef.setText("÷")
+    operators.getChild(i).ButtonRef@onClick(self, x, y):
+      if query.len > 0:
+        if query[^1] notin "-+/*":
+          query &= "/"
+        else:
+          query = query[0..^2] & "/"
+        text.setText(query)
+  else:
+    operators.getChild(i).ButtonRef.setText("×")
+    operators.getChild(i).ButtonRef@onClick(self, x, y):
+      if query.len > 0:
+        if query[^1] notin "-+/*":
+          query &= "*"
+        else:
+          query = query[0..^2] & "*"
+        text.setText(query)
+
+
+addMainScene(main)
+windowLaunch()

src/nodesnim/core/nodes_os.nim

@@ -10,6 +10,13 @@ const
   home_folder* = getHomeDir()
   nodesnim_folder* = home_folder / "NodesNim"
   saves_folder* = "NodesNim" / "saves"
+  standard_font_path* =
+    when defined(windows):
+      "C://Windows/Fonts/segoeuib.ttf"
+    elif defined(android):
+      "/system/fonts/DroidSans.ttf"
+    else:
+      currentSourcePath().parentDir() / "unifont.ttf"
 
 discard existsOrCreateDir(nodesnim_folder)
 discard existsOrCreateDir(home_folder / saves_folder)
@@ -21,9 +28,4 @@ proc setStandardFont*(path: cstring, size: cint) =
     standard_font.close()
   standard_font = openFont(path, size)
 
-when defined(windows):
-  setStandardFont("C://Windows/Fonts/segoeuib.ttf", 16)
-elif defined(android):
-  setStandardFont("/system/fonts/DroidSans.ttf", 16)
-else:
-  setStandardFont(currentSourcePath().parentDir() / "unifont.ttf", 16)
+setStandardFont(standard_font_path, 16)

src/nodesnim/nodes2d/animated_sprite.nim

@@ -69,6 +69,7 @@ method draw*(self: AnimatedSpriteRef, w, h: GLfloat) =
   if frame >= 0 and frame < frames_count:
     var texture = self.animations[self.animation].frames[frame]
     if texture.texture > 0'u32:
+      glPushMatrix()
       if self.centered:
         glTranslatef(x + (self.rect_size.x / 2), y - (self.rect_size.y / 2), self.z_index_global)
         self.position = self.rect_size / 2
@@ -94,13 +95,7 @@ method draw*(self: AnimatedSpriteRef, w, h: GLfloat) =
       glEnd()
       glDisable(GL_DEPTH_TEST)
       glDisable(GL_TEXTURE_2D)
-      glRotatef(-self.rotation, 0, 0, 1)
-      if self.centered:
-        glTranslatef(-x - (self.rect_size.x / 2), -y + (self.rect_size.y / 2), -self.z_index_global)
-        self.position = self.timed_position - self.rect_size/2
-      else:
-        glTranslatef(-x, -y, -self.z_index_global)
-        self.position = self.timed_position
+      glPopMatrix()
     else:
       self.rect_size = Vector2()
 

src/nodesnim/window.nim

@@ -280,7 +280,7 @@ proc onReshape(userdata: pointer; event: ptr Event): Bool32 {.cdecl.} =
   False32
 
 proc windowLaunch* =
-  if main_scene == nil:
+  if main_scene.isNil():
     raise newException(SceneError, "Main scene is not indicated!")
   changeScene(main_scene.name)
   when defined(debug):