TempleOSCDV4.11.ISO

Demo/Graphics/Slider.HC

@@ -0,0 +1,110 @@
+/*This was done with <CTRL-SHIFT-L> template code.
+It's conceptually easy to do a ctrl,
+but tedious.  You have complete freedom.
+
+See $LK,"CCtrl",A="MN:CCtrl"$.
+*/
+
+//Start of autocreated Code
+#define SLIDER_RANGE   30
+#define SLIDER_SPACING 20
+#define SLIDER_BORDER  2
+
+class CSliderState
+{
+  I64 left_pos;
+  I64 right_pos;
+} sld;
+
+U0 DrawCtrlSlider(CDC *dc,CCtrl *c)
+{
+  CSliderState *s=c->state;
+
+  dc->color=LTRED;
+  GrRect(dc, c->left,c->top,SLIDER_SPACING*3+2,SLIDER_SPACING*2+SLIDER_RANGE);
+  dc->color=BLUE;
+  GrRect(dc, c->left+SLIDER_BORDER,c->top+SLIDER_BORDER,
+	SLIDER_SPACING*3+2-2*SLIDER_BORDER,
+	SLIDER_SPACING*2+SLIDER_RANGE-2*SLIDER_BORDER);
+  dc->color=BLACK;
+  GrLine(dc,c->left+1*SLIDER_SPACING+0,c->top+SLIDER_SPACING,
+	c->left+1*SLIDER_SPACING+0,c->top+SLIDER_SPACING+SLIDER_RANGE-1);
+  GrLine(dc,c->left+2*SLIDER_SPACING+1,c->top+SLIDER_SPACING,
+	c->left+2*SLIDER_SPACING+1,c->top+SLIDER_SPACING+SLIDER_RANGE-1);
+  dc->color=LTRED;
+  GrPrint(dc,c->left+1*SLIDER_SPACING+0-FONT_WIDTH/2,
+	c->top+SLIDER_SPACING+SLIDER_RANGE+3,
+	"%d",s->left_pos*10/SLIDER_RANGE);
+  GrPrint(dc,c->left+2*SLIDER_SPACING+1-FONT_WIDTH/2,
+	c->top+SLIDER_SPACING+SLIDER_RANGE+3,
+	"%d",s->right_pos*10/SLIDER_RANGE);
+  GrRect(dc,c->left+1*SLIDER_SPACING+0-3,
+	c->top+SLIDER_SPACING+SLIDER_RANGE-1-s->left_pos-2,7,5);
+  GrRect(dc,c->left+2*SLIDER_SPACING+1-3,
+	c->top+SLIDER_SPACING+SLIDER_RANGE-1-s->right_pos-2,7,5);
+  dc->color=YELLOW;
+  GrRect(dc,c->left+1*SLIDER_SPACING+0-2,
+	c->top+SLIDER_SPACING+SLIDER_RANGE-1-s->left_pos-1,5,3);
+  GrRect(dc,c->left+2*SLIDER_SPACING+1-2,
+	c->top+SLIDER_SPACING+SLIDER_RANGE-1-s->right_pos-1,5,3);
+}
+
+U0 UpdateDerivedCtrlSlider(CCtrl *c)
+{
+  CSliderState *s=c->state;
+  c->left=c->win_task->pix_width/2-(SLIDER_SPACING*3+2)/2;
+  c->right=c->left+3*SLIDER_SPACING+2;
+  c->top=c->win_task->pix_height/2-(SLIDER_SPACING*2+SLIDER_RANGE)/2;
+  c->bottom=c->top+SLIDER_SPACING*2+SLIDER_RANGE;
+  s->left_pos=ClampI64(s->left_pos,0,SLIDER_RANGE-1);
+  s->right_pos=ClampI64(s->right_pos,0,SLIDER_RANGE-1);
+}
+
+U0 LeftClickSlider(CCtrl *c,I64 x,I64 y,Bool)
+{
+  CSliderState *s=c->state;
+  if (x<c->left+1*SLIDER_SPACING+0+SLIDER_SPACING/2)
+    s->left_pos=SLIDER_RANGE-1-(y-(c->top+SLIDER_SPACING));
+  else
+    s->right_pos=SLIDER_RANGE-1-(y-(c->top+SLIDER_SPACING));
+  if (c->update_derived_vals)
+    (*c->update_derived_vals)(c);
+}
+
+CCtrl *SliderNew()
+{
+  CCtrl *c=CAlloc(sizeof(CCtrl));
+  c->win_task=Fs;
+  c->flags=CTRLF_SHOW|CTRLF_CAPTURE_LEFT_IP;
+  c->type=CTRLT_GENERIC;
+  c->state=&sld;
+  MemSet(&sld,0,sizeof(CSliderState));
+  c->draw_it=&DrawCtrlSlider;
+  c->left_click=&LeftClickSlider;
+  c->update_derived_vals=&UpdateDerivedCtrlSlider;
+  QueIns(c,Fs->last_ctrl);
+  TaskDerivedValsUpdate;
+  return c;
+}
+
+U0 SliderDel(CCtrl *c)
+{
+  QueRem(c);
+  Free(c);
+}
+
+//End of autocreated Code
+
+U0 Main()
+{
+  "This is to demo ctrls.\n";
+  CCtrl *c=SliderNew;
+  PressAKey;
+  "Left: %d  Right: %d\n",
+	sld.left_pos*10/SLIDER_RANGE,
+	sld.right_pos*10/SLIDER_RANGE;
+  SliderDel(c);
+  DocBottom;
+}
+
+Main;