Initial commit

it works!!

.gitignore

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+# This file is used to ignore files which are generated
+# ----------------------------------------------------------------------------
+
+*~
+*.autosave
+*.a
+*.core
+*.moc
+*.o
+*.obj
+*.orig
+*.rej
+*.so
+*.so.*
+*_pch.h.cpp
+*_resource.rc
+*.qm
+.#*
+*.*#
+core
+!core/
+tags
+.DS_Store
+.directory
+*.debug
+Makefile*
+*.prl
+*.app
+moc_*.cpp
+ui_*.h
+qrc_*.cpp
+Thumbs.db
+*.res
+*.rc
+/.qmake.cache
+/.qmake.stash
+
+# qtcreator generated files
+*.pro.user*
+CMakeLists.txt.user*
+
+# xemacs temporary files
+*.flc
+
+# Vim temporary files
+.*.swp
+
+# Visual Studio generated files
+*.ib_pdb_index
+*.idb
+*.ilk
+*.pdb
+*.sln
+*.suo
+*.vcproj
+*vcproj.*.*.user
+*.ncb
+*.sdf
+*.opensdf
+*.vcxproj
+*vcxproj.*
+
+# MinGW generated files
+*.Debug
+*.Release
+
+# Python byte code
+*.pyc
+
+# Binaries
+# --------
+*.dll
+*.exe
+
+# build dir
+build/

CMakeLists.txt

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+cmake_minimum_required(VERSION 3.16)
+
+project(texcrafting VERSION 0.1 LANGUAGES CXX)
+
+set(CMAKE_AUTOMOC ON)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+
+find_package(Qt6 6.2 REQUIRED COMPONENTS Quick QuickControls2)
+
+
+qt_add_executable(apptexcrafting
+    main.cpp
+)
+
+qt_add_qml_module(apptexcrafting
+    URI texcrafting
+    VERSION 1.0
+    QML_FILES
+        Main.qml
+        TexSlot.qml
+        SOURCES texturecrafter.h texturecrafter.cpp
+)
+
+# Qt for iOS sets MACOSX_BUNDLE_GUI_IDENTIFIER automatically since Qt 6.1.
+# If you are developing for iOS or macOS you should consider setting an
+# explicit, fixed bundle identifier manually though.
+set_target_properties(apptexcrafting PROPERTIES
+#    MACOSX_BUNDLE_GUI_IDENTIFIER com.example.apptexcrafting
+    MACOSX_BUNDLE_BUNDLE_VERSION ${PROJECT_VERSION}
+    MACOSX_BUNDLE_SHORT_VERSION_STRING ${PROJECT_VERSION_MAJOR}.${PROJECT_VERSION_MINOR}
+    MACOSX_BUNDLE TRUE
+    WIN32_EXECUTABLE TRUE
+)
+
+target_link_libraries(apptexcrafting
+    PRIVATE Qt6::Quick
+)
+
+include(GNUInstallDirs)
+install(TARGETS apptexcrafting
+    BUNDLE DESTINATION .
+    LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
+    RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
+)

Main.qml

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+import QtQuick
+import QtQuick.Layouts
+import QtQuick.Controls
+
+import texcrafting
+
+ApplicationWindow {
+    width: 640
+    height: 480
+    visible: true
+    title: qsTr("Hello World")
+
+    TextureCrafter {
+        id: crafter
+    }
+
+    RowLayout {
+        anchors.fill: parent
+
+        ColumnLayout {
+            Layout.fillWidth: true
+
+            Layout.alignment: Qt.AlignHCenter
+
+            TexSlot {
+                id: texSlotR
+
+                rectColor: "red"
+            }
+
+            TexSlot {
+                id: texSlotG
+
+                rectColor: "green"
+            }
+
+            TexSlot {
+                id: texSlotB
+
+                rectColor: "blue"
+            }
+        }
+
+        ColumnLayout {
+            Layout.fillWidth: true
+
+            Layout.alignment: Qt.AlignHCenter
+
+            ProgressBar {
+                value: 0.5
+            }
+
+            Button {
+                Layout.alignment: Qt.AlignHCenter
+                text: qsTr("Craft!")
+
+                onClicked: crafter.packChannels([texSlotR.filePath, texSlotG.filePath, texSlotB.filePath])
+            }
+        }
+
+        ColumnLayout {
+            Layout.fillWidth: true
+
+            Layout.alignment: Qt.AlignHCenter
+
+            TexSlot {
+
+
+                rectColor: "green"
+            }
+        }
+    }
+}

TexSlot.qml

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+import QtQuick
+import QtQuick.Layouts
+import QtQuick.Controls
+
+DropArea {
+    property string rectColor: "white"
+    property url filePath: ""
+
+    Layout.alignment: Qt.AlignCenter
+
+    width: 128
+    height: 128
+
+
+    Rectangle {
+        id: rectangle
+        anchors.fill: parent
+        color: rectColor
+
+        Image {
+            id: image
+
+            anchors.centerIn: parent
+
+            width: 96
+            height: 96
+
+
+        }
+    }
+
+    Label {
+        id: huh
+
+        text: "無"
+    }
+
+    onEntered: {
+        rectangle.color = "cyan";
+        drag.accept (Qt.LinkAction);
+    }
+    onDropped: {
+        // TODO: handle dragging all channels at once
+        var firstUrl = new URL(drop.urls[0]);
+        if (firstUrl.protocol === "file:")
+        {
+        console.log(drop.urls);
+
+            filePath = drop.urls[0];
+        huh.text = drop.urls[0];
+        image.source = drop.urls[0];
+        }
+        rectangle.color = rectColor;
+    }
+    onExited: {
+        rectangle.color = rectColor;
+    }
+}

main.cpp

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+#include <QGuiApplication>
+#include <QQmlApplicationEngine>
+
+int main(int argc, char *argv[])
+{
+    QGuiApplication app(argc, argv);
+
+    QQmlApplicationEngine engine;
+    const QUrl url(QStringLiteral("qrc:/texcrafting/Main.qml"));
+    QObject::connect(
+        &engine,
+        &QQmlApplicationEngine::objectCreated,
+        &app,
+        [url](QObject *obj, const QUrl &objUrl) {
+            if (!obj && url == objUrl)
+                QCoreApplication::exit(-1);
+        },
+        Qt::QueuedConnection);
+    engine.load(url);
+
+    return app.exec();
+}

texturecrafter.cpp

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+#include "texturecrafter.h"
+
+TextureCrafter::TextureCrafter(QObject *parent)
+    : QObject{parent}
+{}
+
+void TextureCrafter::packChannels(QVector<QUrl> imagePaths) {
+    QVector<QImage> sourceImages;
+    int width = 0, height = 0;
+    QImage::Format format = QImage::Format_RGB888;
+
+    for (int i = 0; i < imagePaths.length(); i++) {
+        // if the ui layer did its job this will always be a file:// url
+        QString rawPath = imagePaths[i].path();
+        QImage newImage(rawPath); // would this cause a use after free idk
+
+        // we just use the first image's dimensions and force the others to conform hehe
+        if (width == 0) {
+            width = newImage.width();
+        }
+        if (height == 0) {
+            height = newImage.height();
+        }
+
+        sourceImages.append(newImage);
+    }
+
+    QImage outImage(width, height, format);
+
+    // theres probably a faster way to do this but eh
+    for (int i = 0; i < width; i++) {
+        for (int j = 0; j < height; j++) {
+            int r, g, b;
+
+            // too eepy for dry
+            r = sourceImages.at(0).pixelColor(i, j).red();
+            g = sourceImages.at(1).pixelColor(i, j).green();
+            b = sourceImages.at(2).pixelColor(i, j).blue();
+
+            QColor newColor(r, g, b);
+
+            outImage.setPixelColor(i, j, newColor);
+        }
+    }
+
+    outImage.save("/tmp/out.png");
+
+    //do we need to close these??? idk lets hope qt handles it
+}

texturecrafter.h

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+#ifndef TEXTURECRAFTER_H
+#define TEXTURECRAFTER_H
+
+#include <QObject>
+#include <QQmlEngine>
+#include <QImage>
+
+class TextureCrafter : public QObject
+{
+    Q_OBJECT
+    QML_ELEMENT
+public:
+    explicit TextureCrafter(QObject *parent = nullptr);
+
+    Q_INVOKABLE void packChannels(QVector<QUrl> images);
+
+signals:
+private:
+};
+
+#endif // TEXTURECRAFTER_H