fixed scaling with mouse-wheel (ctrl)

src/asciterm_generic.py

@@ -189,7 +189,7 @@ def adapt_to_dim(self, width, height):
     def __init__(self, args):
 
         self.src_path = os.path.dirname(os.path.abspath(__file__))
-
+        self.ctrl_pressed = False
         self.altscreen = False
         self.width = 1000
         self.height = 1000
@@ -247,6 +247,7 @@ def __init__(self, args):
 
     def _on_resize(self, width, height):
         self.adapt_to_dim(width, height)
+        self.vt.recalc()
 
     def on_cursor_move(self):
         x1 = 2 * self.cursor_pos.col / self.cols - 1
@@ -344,14 +345,27 @@ def pty_function(self):
                         break
 
     def on_scroll(self, dx, dy):
-        # atm we ignore the amount, we care about the sign
-        # as glumpy and vispy (likely due to the backends) are reporting different values
-        self.vt.on_scroll(int(abs(dx)/(dx if dx != 0 else 1)), 
-                          int(abs(dy)/(dy if dy !=0 else 1)))
-        self.vt.recalc()
+        if self.ctrl_pressed:
+            print("key pressed!!!")
+            self.scale += dy/20
+            if self.scale < 0.5:
+                self.scale = 0.5
+            self.adapt_to_dim(self.width, self.height)
+            self.program["scale"] = self.scale
+            self.vt.recalc()
+        else:
+            # atm we ignore the amount, we care about the sign
+            # as glumpy and vispy (likely due to the backends) are reporting different values
+            self.vt.on_scroll(int(abs(dx)/(dx if dx != 0 else 1)),
+                            int(abs(dy)/(dy if dy != 0 else 1)))
+            self.vt.recalc()
         self.update()
 
     def on_text(self, text):
         self.vt.scroll = 0
         os.write(self.master_fd, text)
 
+    def on_ctrl_pressed(self, on):
+        # this is a temp naive implementation for the polymorfism
+        # between glumpy and vispy for key pressed
+        self.ctrl_pressed = on

src/asciterm_glumpy.py

@@ -77,7 +77,6 @@ def as_texture_2d(self, data):
 
     def update(self):
         pass
-        #self.on_draw()
 
     def on_draw(self, event):
         self.window.clear()
@@ -86,6 +85,9 @@ def on_draw(self, event):
     def on_resize(self, width, height):
         self._on_resize(width, height)
 
+    def on_key_press(self, key, modifiers):
+        self.on_ctrl_pressed(modifiers & app.window.key.MOD_CTRL)
+
     def on_character(self, text):
         self.on_text(str.encode(text))
 
@@ -98,5 +100,4 @@ def quit(self):
         self.finish = True
 
     def on_mouse_scroll(self, x, y, dx, dy):
-        print("mouse scroll ", x, y, dx, dy)
-        self.on_scroll(self, dx, dy)
+        self.on_scroll(dx, dy)

src/asciterm_vispy.py

@@ -1,10 +1,11 @@
 from asciterm_generic import ArtSciTerm
 from vispy import gloo, app, util
-import os
+
 
 class Null:
     pass
 
+
 class ArtSciTermVispyProgram(gloo.Program):
     def get_uniforms(self):
         uniforms = []
@@ -17,14 +18,13 @@ def get_attributes(self):
         attributes = []
         for variable in self.variables:
             if variable.kind == 'attribute':
-               attributesuniforms.append((variable[2], variable[1]))
+                attributes.append((variable[2], variable[1]))
 
         return attributes
 
     def to_gl_constant(self, txt):
         return txt
 
-
     GL_CLAMP = "clamp_to_edge"
     GL_POINTS = "points"
     GL_TRIANGLES = "triangles"
@@ -36,8 +36,6 @@ def __init__(self, args):
         setattr(self.factory, "create_program", ArtSciTermVispyProgram)
         setattr(self.factory, "ortho",  util.transforms.ortho)
 
-        #self.gloo = gloo
-        #self._app = app
         app.Canvas.__init__(self)
         ArtSciTerm.__init__(self, args)
 
@@ -76,15 +74,7 @@ def on_timer(self, event):
 
     def on_mouse_wheel(self, event):
         self.on_scroll(*event.delta)
-        return  # TODO ... implement the scale when shift is pressed
-        self.scale += event.delta[1]/10
-        if self.scale < 0.5:
-            self.scale = 0.5
-        self.adapt_to_dim(self.width, self.height)
-        self.program["scale"]= self.scale
-        #self.program1["scale"]= self.scale
-        #self.on_cursor_move()
-        self.dirty = True
+        return
 
     def on_draw(self, event):
         gloo.clear('black')