src/preferences/screen/RefreshSlider.cpp

   1 /*
   2  * Copyright 2001-2006, Haiku.
   3  * Distributed under the terms of the MIT License.
   4  *
   5  * Authors:
   6  *              Rafael Romo
   7  *              Stefano Ceccherini (burton666@libero.it)
   8  *              Axel Dörfler, axeld@pinc-software.de
   9  */
  10
  11
  12 #include "RefreshSlider.h"
  13 #include "Constants.h"
  14
  15 #include <Catalog.h>
  16 #include <String.h>
  17 #include <Window.h>
  18
  19 #include <new>
  20 #include <stdio.h>
  21
  22
  23 #undef B_TRANSLATION_CONTEXT
  24 #define B_TRANSLATION_CONTEXT "Screen"
  25
  26
  27 RefreshSlider::RefreshSlider(BRect frame, float min, float max, uint32 resizingMode)
  28         : BSlider(frame, B_TRANSLATE("Screen"), B_TRANSLATE("Refresh rate:"),
  29                 new BMessage(SLIDER_INVOKE_MSG), (int32)rintf(min * 10), (int32)rintf(max * 10),
  30                 B_BLOCK_THUMB, resizingMode),
  31         fStatus(new (std::nothrow) char[32])
  32 {
  33         BString minRefresh;
  34         minRefresh << (uint32)min;
  35         BString maxRefresh;
  36         maxRefresh << (uint32)max;
  37         SetLimitLabels(minRefresh.String(), maxRefresh.String());
  38
  39         SetHashMarks(B_HASH_MARKS_BOTTOM);
  40         SetHashMarkCount(uint32(max - min) / 5 + 1);
  41
  42         SetKeyIncrementValue(1);
  43 }
  44
  45
  46 RefreshSlider::~RefreshSlider()
  47 {
  48         delete[] fStatus;
  49 }
  50
  51
  52 void
  53 RefreshSlider::DrawFocusMark()
  54 {
  55         if (IsFocus()) {
  56                 rgb_color blue = { 0, 0, 229, 255 };
  57
  58                 BRect rect(ThumbFrame());
  59                 BView *view = OffscreenView();
  60
  61                 rect.InsetBy(2.0, 2.0);
  62                 rect.right--;
  63                 rect.bottom--;
  64
  65                 view->SetHighColor(blue);
  66                 view->StrokeRect(rect);
  67         }
  68 }
  69
  70
  71 void
  72 RefreshSlider::KeyDown(const char *bytes, int32 numBytes)
  73 {
  74         switch (*bytes) {
  75                 case B_LEFT_ARROW:
  76                 {
  77                         SetValue(Value() - 1);
  78                         Invoke();
  79                         break;
  80                 }
  81
  82                 case B_RIGHT_ARROW:
  83                 {
  84                         SetValue(Value() + 1);
  85                         Invoke();
  86                         break;
  87                 }
  88
  89                 default:
  90                         break;
  91         }
  92 }
  93
  94
  95 const char*
  96 RefreshSlider::UpdateText() const
  97 {
  98         if (fStatus != NULL)
  99                 snprintf(fStatus, 32, B_TRANSLATE("%.1f Hz"), (float)Value() / 10);
 100
 101         return fStatus;
 102 }