ui/winui/image.cpp

Wed, 30 Oct 2024 15:15:36 +0100

author
Olaf Wintermann <olaf.wintermann@gmail.com>
date
Wed, 30 Oct 2024 15:15:36 +0100
branch
newapi
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parent 374
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implement imageviewer (WINUI)

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1 /*
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2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
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3 *
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4 * Copyright 2024 Olaf Wintermann. All rights reserved.
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5 *
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6 * Redistribution and use in source and binary forms, with or without
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7 * modification, are permitted provided that the following conditions are met:
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8 *
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9 * 1. Redistributions of source code must retain the above copyright
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10 * notice, this list of conditions and the following disclaimer.
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11 *
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12 * 2. Redistributions in binary form must reproduce the above copyright
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13 * notice, this list of conditions and the following disclaimer in the
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14 * documentation and/or other materials provided with the distribution.
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15 *
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16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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26 * POSSIBILITY OF SUCH DAMAGE.
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27 */
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28
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29 #include "pch.h"
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30
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31 #include "image.h"
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32
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33 #include "toolkit.h"
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34 #include "container.h"
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35 #include "../common/object.h"
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36 #include "../common/context.h"
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37 #include "util.h"
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38
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39 using namespace winrt;
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40 using namespace Microsoft::UI::Xaml;
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41 using namespace Microsoft::UI::Xaml::Controls;
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42 using namespace Windows::UI::Xaml::Interop;
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43 using namespace winrt::Windows::Foundation;
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44 using namespace winrt::Microsoft::UI::Xaml::Controls::Primitives;
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45 using namespace winrt::Microsoft::UI::Xaml::Media::Imaging;
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46 using namespace winrt::Microsoft::UI::Xaml::Media;
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47
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48 UiImageSource::UiImageSource(winrt::Microsoft::UI::Xaml::Media::ImageSource& src) : imgsrc(src) {}
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49
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50 UIEXPORT UIWIDGET ui_imageviewer_create(UiObject *obj, UiImageViewerArgs args) {
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51 UiObject* current = uic_current_obj(obj);
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52
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53 Image image = Image();
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54 FrameworkElement elm = image;
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55 if (args.scrollarea) {
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56 ScrollViewer scroll = ScrollViewer();
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57 scroll.Content(image);
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58 elm = scroll;
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59 }
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60
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61 // create toolkit wrapper object and register destructor
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62 UIElement uielm = image;
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63 UiWidget* widget = new UiWidget(uielm);
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64 ui_context_add_widget_destructor(current->ctx, widget);
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65
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66 // bind variable
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67 UiVar* var = uic_widget_var(obj->ctx, current->ctx, args.value, args.varname, UI_VAR_GENERIC);
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68 if (var) {
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69 UiGeneric *value = (UiGeneric*)var->value;
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70 value->obj = widget;
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71 value->get = ui_image_get;
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72 value->set = ui_image_set;
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73 }
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74
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75 // add button to current container
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76 UI_APPLY_LAYOUT1(current, args);
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77
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78 current->container->Add(elm, true);
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79
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80 return widget;
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81 }
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82
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83 extern "C" void* ui_image_get(UiGeneric *g) {
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84
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85
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86 return NULL;
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87 }
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88
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89 extern "C" int ui_image_set(UiGeneric *g, void *data, const char *type) {
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90 if(!type || strcmp(type, UI_IMAGE_OBJECT_TYPE)) {
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91 return 1;
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92 }
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93
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94 UiImageSource *imgdata = (UiImageSource*)data;
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95 if (g->value) {
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96 UiImageSource *prevData = (UiImageSource*)g->value;
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97 delete prevData;
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98 }
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99 g->value = imgdata;
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100
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101 UiWidget* widget = (UiWidget*)g->obj;
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102 Image image = widget->uielement.as<Image>();
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103 image.Source(imgdata->imgsrc);
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104
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105 return 0;
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106 }
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107
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108 UIEXPORT int ui_image_load_file(UiGeneric *obj, const char *path) {
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109 wchar_t* wpath = str2wstr(path, nullptr);
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110 std::wstring wPath = wpath;
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111 std::wstring uriPath = L"file:///" + wPath;
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112 Uri uri{ uriPath };
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113
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114 BitmapImage bitmapImage = BitmapImage();
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115 bitmapImage.UriSource(uri);
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116 ImageSource src = bitmapImage;
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117
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118 UiImageSource *imgdata = new UiImageSource(src);
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119 obj->set(obj, imgdata, UI_IMAGE_OBJECT_TYPE);
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120
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121 free(wpath);
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122
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123 return 0;
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124 }

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