Implement open dialog system from inochi-creator

dub.sdl

@@ -30,6 +30,8 @@ stringImportPaths "res"
 configuration "barebones" {
 	platforms "linux"
 	targetType "executable"
+
+	dependency "dportals" version="~>0.1.0"
 }
 
 

source/session/io/package.d

@@ -0,0 +1,86 @@
+/*
+    Copyright © 2020-2023, Inochi2D Project
+    Distributed under the 2-Clause BSD License, see LICENSE file.
+
+    Authors: Luna Nielsen
+*/
+module session.io;
+
+import tinyfiledialogs;
+public import tinyfiledialogs : TFD_Filter;
+import std.string;
+import i18n;
+
+version (linux) {
+    import dportals.filechooser;
+    import dportals.promise;
+}
+
+private {
+    version (linux) {
+        string uriFromPromise(Promise promise) {
+            if (promise.success) {
+                import std.array : replace;
+
+                string uri = promise.value["uris"].data.array[0].str;
+                uri = uri.replace("%20", " ");
+                return uri[7 .. $];
+            }
+            return null;
+        }
+
+        FileFilter[] tfdToFileFilter(const(TFD_Filter)[] filters) {
+            FileFilter[] out_;
+
+            foreach (filter; filters) {
+                auto of = FileFilter(
+                    cast(string) filter.description.fromStringz,
+                    []
+                );
+
+                foreach (i, pattern; filter.patterns) {
+                    of.items ~= FileFilterItem(
+                        cast(uint) i,
+                        cast(string) pattern.fromStringz
+                    );
+                }
+
+                out_ ~= of;
+            }
+
+            return out_;
+        }
+    }
+}
+
+/**
+    Call a file dialog to open a file.
+*/
+string insShowOpenDialog(const(TFD_Filter)[] filters, string title = "Open...", string parentWindow = "") {
+    version (linux) {
+        try {
+            FileOpenOptions op;
+            op.filters = tfdToFileFilter(filters);
+            auto promise = dpFileChooserOpenFile(parentWindow, title, op);
+            promise.await();
+            return promise.uriFromPromise();
+        } catch (Throwable ex) {
+
+            // FALLBACK: If xdg-desktop-portal is not available then try tinyfiledialogs.
+            c_str filename = tinyfd_openFileDialog(title.toStringz, "", filters, false);
+            if (filename !is null) {
+                string file = cast(string) filename.fromStringz;
+                return file;
+            }
+            return null;
+        }
+    } else {
+        c_str filename = tinyfd_openFileDialog(title.toStringz, "", filters, false);
+        if (filename !is null) {
+            string file = cast(string) filename.fromStringz;
+            return file;
+        }
+        return null;
+    }
+}
+

source/session/windows/main.d

@@ -10,6 +10,7 @@ import session.scene;
 import session.log;
 import session.framesend;
 import session.plugins;
+import session.io;
 import inui;
 import inui.widgets;
 import inui.toolwindow;
@@ -22,6 +23,8 @@ import inui.utils.link;
 import std.format;
 import session.ver;
 
+version(linux) import dportals;
+
 private {
     struct InochiWindowSettings {
         int width;
@@ -78,6 +81,23 @@ protected:
 
                 if (uiImBeginMenu(__("File"))) {
 
+                    if (uiImMenuItem(__("Open"))) {
+                        const TFD_Filter[] filters = [
+                            { ["*.inp"], "Inochi2d Puppet (*.inp)" }
+                        ];
+
+                        string parentWindow = "";
+                        version(linux) {
+                            static if (is(typeof(&getWindowHandle))) {
+                                parentWindow = getWindowHandle();
+                            }
+                        }
+                        string file = insShowOpenDialog(filters, _("Open..."), parentWindow);
+                        if (file) loadModels([file]);
+                    }
+
+                    uiImSeperator();
+
                     if (uiImMenuItem(__("Exit"))) {
                         this.close();
                     }
@@ -170,6 +190,8 @@ protected:
                 }
             uiImEndMainMenuBar();
         }
+
+        version(linux) dpUpdate();
     }
 
     override
@@ -212,5 +234,7 @@ public:
         version (InBranding) {
             logo = new Texture(ShallowTexture(cast(ubyte[])import("tex/logo.png")));
         }
+
+        version(linux) dpInit();
     }
 }