# author: Ethosa import ../thirdparty/opengl, ../thirdparty/opengl/glut, ../core/vector2, ../core/rect2, ../core/anchor, ../core/input, ../core/enums, ../core/color, ../core/color_text, ../nodes/node, control type RichEditTextObj* = object of ControlPtr blit_caret*: bool blit_speed*: float blit_time*: float caret_position*: int font*: pointer ## Glut font data. spacing*: float ## Font spacing. size*: float ## Font size. text*: ColorTextRef hint_text*: ColorTextRef caret_color*: ColorRef text_align*: AnchorRef ## Text align. RichEditTextPtr* = ptr RichEditTextObj proc RichEditText*(name: string, variable: var RichEditTextObj): RichEditTextPtr = nodepattern(RichEditTextObj) controlpattern() variable.rect_size.x = 64 variable.rect_size.y = 32 variable.text = clrtext"" variable.font = GLUT_BITMAP_HELVETICA_12 variable.size = 12 variable.spacing = 2 variable.text_align = Anchor(0, 0, 0, 0) variable.hint_text = clrtext("Edit text ...", Color(0.8, 0.8, 0.8)) variable.caret_position = 0 variable.blit_caret = true variable.caret_color = Color(1f, 1f, 1f, 0.5) variable.blit_speed = 0.002 variable.blit_time = 0f proc RichEditText*(obj: var RichEditTextObj): RichEditTextPtr {.inline.} = RichEditText("RichEditText", obj) method draw*(self: RichEditTextPtr, w, h: GLfloat) = self.calcGlobalPosition() let x = -w/2 + self.global_position.x y = h/2 - self.global_position.y text = if self.text.len() > 0: self.text else: self.hint_text glColor4f(self.background_color.r, self.background_color.g, self.background_color.b, self.background_color.a) glRectf(x, y, x+self.rect_size.x, y-self.rect_size.y) var th = 0f char_num = 0 for line in text.splitLines(): # get text height th += self.spacing + self.size if th != 0: th -= self.spacing var ty = y - self.rect_size.y*self.text_align.y1 + th*self.text_align.y2 - self.size for line in text.splitLines(): var tw = self.font.glutBitmapLength($line).float # Draw text: var tx = x + self.rect_size.x*self.text_align.x1 - tw * self.text_align.x2 for c in line.chars: let cw = self.font.glutBitmapWidth(c.c.int).float right = if self.text_align.x2 > 0.9 and self.text_align.x1 > 0.9: 1f else: 0f bottom = if self.text_align.y2 > 0.9 and self.text_align.y1 > 0.9: 1f else: 0f if tx >= x and tx < x + self.rect_size.x+right and ty <= y and ty > y - self.rect_size.y+bottom: glColor4f(c.color.r, c.color.g, c.color.b, c.color.a) glRasterPos2f(tx, ty) # set char position self.font.glutBitmapCharacter(c.c.int) # render char inc char_num if char_num == self.caret_position and self.blit_caret and self.blit_time > 1f: glColor4f(self.caret_color.r, self.caret_color.g, self.caret_color.b, self.caret_color.a) glRectf(tx+cw, ty, tx+cw+2, ty+self.size) if self.blit_time > 2f: self.blit_time = 0f tx += cw inc char_num ty -= self.spacing + self.size self.blit_time += self.blit_speed # Press if self.pressed: self.press(last_event.x, last_event.y) method dublicate*(self: RichEditTextPtr, obj: var RichEditTextObj): RichEditTextPtr {.base.} = obj = self[] obj.addr method handle*(self: RichEditTextPtr, event: InputEvent, mouse_on: var NodePtr) = procCall self.ControlPtr.handle(event, mouse_on) if self.focused: if event.kind == KEYBOARD: if event.key_cint in pressed_keys_cints: # Special chars if event.key_cint == K_LEFT and self.caret_position > 0: self.caret_position -= 1 elif event.key_cint == K_RIGHT and self.caret_position < self.text.len(): self.caret_position += 1 elif event.key in pressed_keys: # Normal chars if event.key_int == 8: # Backspace if self.caret_position > 1 and self.caret_position < self.text.len(): self.text = self.text[0..self.caret_position-2] & self.text[self.caret_position..^1] self.caret_position -= 1 elif self.caret_position == self.text.len() and self.caret_position > 0: self.text = self.text[0..^2] self.caret_position -= 1 elif self.caret_position == 1: self.text = self.text[1..^1] self.caret_position -= 1 elif self.caret_position > 0 and self.caret_position < self.text.len(): self.text = self.text[0..self.caret_position-1] & clrtext(event.key) & self.text[self.caret_position..^1] self.caret_position += 1 elif self.caret_position == 0: self.text = clrtext(event.key) & self.text self.caret_position += 1 elif self.caret_position == self.text.len(): self.text &= clrtext(event.key) self.caret_position += 1 method setTextAlign*(self: RichEditTextPtr, align: AnchorRef) {.base.} = ## Changes text align. self.text_align = align method setTextAlign*(self: RichEditTextPtr, x1, y1, x2, y2: float) {.base.} = ## Changes text align. self.text_align = Anchor(x1, y1, x2, y2) method setText*(self: RichEditTextPtr, value: ColorTextRef) {.base.} = self.text = value