src/add-ons/translators/png/PNGView.cpp

   1 /*
   2  * Copyright 2003-2009, Haiku, Inc. All rights reserved.
   3  * Distributed under the terms of the MIT license.
   4  *
   5  * Authors:
   6  *              Michael Wilber
   7  *              Axel Dörfler, axeld@pinc-software.de
   8  */
   9
  10
  11 #include "PNGView.h"
  12 #include "PNGTranslator.h"
  13
  14 #include <Alert.h>
  15 #include <Catalog.h>
  16 #include <LayoutBuilder.h>
  17 #include <MenuField.h>
  18 #include <MenuItem.h>
  19 #include <PopUpMenu.h>
  20 #include <StringView.h>
  21 #include <TextView.h>
  22
  23 #include <stdio.h>
  24 #define PNG_NO_PEDANTIC_WARNINGS
  25 #include <png.h>
  26
  27 #undef B_TRANSLATION_CONTEXT
  28 #define B_TRANSLATION_CONTEXT "PNGTranslator"
  29
  30 PNGView::PNGView(const BRect &frame, const char *name, uint32 resizeMode,
  31                 uint32 flags, TranslatorSettings *settings)
  32         : BView(frame, name, resizeMode, flags | B_FRAME_EVENTS)
  33 {
  34         fSettings = settings;
  35         SetViewColor(ui_color(B_PANEL_BACKGROUND_COLOR));
  36
  37         BStringView *titleView  = new BStringView("title",
  38                 B_TRANSLATE("PNG image translator"));
  39         titleView->SetFont(be_bold_font);
  40
  41         char version[256];
  42         snprintf(version, sizeof(version), B_TRANSLATE("Version %d.%d.%d, %s"),
  43                 int(B_TRANSLATION_MAJOR_VERSION(PNG_TRANSLATOR_VERSION)),
  44                 int(B_TRANSLATION_MINOR_VERSION(PNG_TRANSLATOR_VERSION)),
  45                 int(B_TRANSLATION_REVISION_VERSION(PNG_TRANSLATOR_VERSION)),
  46                 __DATE__);
  47         BStringView *versionView =  new BStringView("version", version);
  48
  49         BStringView *copyrightView =  new BStringView(
  50                 "Copyright", B_UTF8_COPYRIGHT "2003-2006 Haiku Inc.");
  51
  52         // setup PNG interlace options
  53
  54         fInterlaceMenu = new BPopUpMenu(B_TRANSLATE("Interlace Option"));
  55         BMenuItem* item = new BMenuItem(B_TRANSLATE("None"),
  56                 _InterlaceMessage(PNG_INTERLACE_NONE));
  57         if (fSettings->SetGetInt32(PNG_SETTING_INTERLACE) == PNG_INTERLACE_NONE)
  58                 item->SetMarked(true);
  59         fInterlaceMenu->AddItem(item);
  60
  61         item = new BMenuItem("Adam7", _InterlaceMessage(PNG_INTERLACE_ADAM7));
  62         if (fSettings->SetGetInt32(PNG_SETTING_INTERLACE) == PNG_INTERLACE_ADAM7)
  63                 item->SetMarked(true);
  64         fInterlaceMenu->AddItem(item);
  65
  66         BMenuField* menuField = new BMenuField(
  67                 B_TRANSLATE("PNG Interlace Menu"),
  68                 B_TRANSLATE("Interlacing type:"), fInterlaceMenu);
  69         menuField->SetDivider(menuField->StringWidth(menuField->Label()) + 7.0f);
  70         menuField->ResizeToPreferred();
  71
  72         fCopyrightView = new BTextView("PNG copyright");
  73         fCopyrightView->SetViewColor(ui_color(B_PANEL_BACKGROUND_COLOR));
  74         fCopyrightView->SetLowColor(fCopyrightView->ViewColor());
  75         fCopyrightView->MakeEditable(false);
  76         fCopyrightView->SetWordWrap(false);
  77         fCopyrightView->MakeResizable(true);
  78         fCopyrightView->SetText(png_get_copyright(NULL));
  79
  80         BLayoutBuilder::Group<>(this, B_VERTICAL, 0)
  81                 .SetInsets(B_USE_DEFAULT_SPACING)
  82                 .Add(titleView)
  83                 .Add(versionView)
  84                 .Add(copyrightView)
  85                 .AddGlue()
  86                 .AddGroup(B_HORIZONTAL)
  87                         .Add(menuField)
  88                         .AddGlue()
  89                         .End()
  90                 .AddGlue()
  91                 .Add(fCopyrightView);
  92
  93         BFont font;
  94         GetFont(&font);
  95         SetExplicitPreferredSize(BSize((font.Size() * 390) / 12,
  96                 (font.Size() * 180) / 12));
  97
  98         // TODO: remove this workaround for ticket #4217
  99         fCopyrightView->SetExplicitPreferredSize(
 100                 BSize(fCopyrightView->LineWidth(4), fCopyrightView->TextHeight(0, 80)));
 101         fCopyrightView->SetExplicitMaxSize(fCopyrightView->ExplicitPreferredSize());
 102         fCopyrightView->SetExplicitMinSize(fCopyrightView->ExplicitPreferredSize());
 103 }
 104
 105
 106 PNGView::~PNGView()
 107 {
 108         fSettings->Release();
 109 }
 110
 111
 112 BMessage *
 113 PNGView::_InterlaceMessage(int32 kind)
 114 {
 115         BMessage* message = new BMessage(M_PNG_SET_INTERLACE);
 116         message->AddInt32(PNG_SETTING_INTERLACE, kind);
 117
 118         return message;
 119 }
 120
 121
 122 void
 123 PNGView::AttachedToWindow()
 124 {
 125         BView::AttachedToWindow();
 126
 127         // set target for interlace options menu items
 128         fInterlaceMenu->SetTargetForItems(this);
 129 }
 130
 131
 132 void
 133 PNGView::FrameResized(float width, float height)
 134 {
 135         // This works around a flaw of BTextView
 136         fCopyrightView->SetTextRect(fCopyrightView->Bounds());
 137 }
 138
 139
 140 void
 141 PNGView::MessageReceived(BMessage *message)
 142 {
 143         if (message->what == M_PNG_SET_INTERLACE) {
 144                 // change setting for interlace option
 145                 int32 option;
 146                 if (message->FindInt32(PNG_SETTING_INTERLACE, &option) == B_OK) {
 147                         fSettings->SetGetInt32(PNG_SETTING_INTERLACE, &option);
 148                         fSettings->SaveSettings();
 149                 }
 150         } else
 151                 BView::MessageReceived(message);
 152 }
 153