M3ImageManipulator

Requirements

Phase 1

TODO:

• The application has an icon if supported by the OS
• The application determines what image formats are available on the current system under QT and offers them in the file dialogues

DONE:

• The most important menu items have keyboard shortcuts
• The main window can be resized and implements standard behavior, such as minimum and maximum size
• The "File" - menu comprises at least the items Open, Save, Save As, Print, & Exit
• The "Edit" - menu comprises at least the items Copy & Paste
• The app is a Qt 5.9 widget application using a single document interface
• The application has a menu comprising "File", "View", & "Help"
• The Help menu comprises at least an about item for this application and one for Qt
• The visible part of the image can be moved using scroll bars
• Image files can be pasted from the clipboard
• Image files can be copied to the clipboard
• The status bar shows important information - status tips
• A picture - at least BMP, JPEG, & PNG - can be loaded from file and will be displayed
• An image file can be dragged and dropped into the application from the file explorer or alike
• Not available functions are disabled
• The image can be shown in selectable zoom modes between 25% and 400%
• The name of the shown image file is shown in the window title without path prefix
• The current zoom is shown in the status bar
• The visible part of the image can be moved by dragging with the mouse
• The mouse pointer turns into a grabbing hand when dragging
• The GUI language is English, the source code has to be prepared for later translation
• If present, Qt standard dialogues are used for opening, saving, ...
• If loading or saving an image fails, a useful error message is displayed
• The "View" - menu comprises at least Zoom In (Ctrl++), Zoom out (Ctrl+-), Zoom 100% (Ctrl+0), Fit to Window (Ctrl+F), and Show Dialog
• Joker: Grabbing must only work when drag starts on canvas
• The shown picture can be printed, where the printer can be selected from a standard dialogue
• The application saves window size, position, and other important settings and restores them upon start

Phase 2

TODO:

• Color correction can be done in RBG or YUV color space, which is a setting in the dialogue
• The strength of color correction can be set using a slider for every channel of the color space
• The dialog has a preview button which shows the result while pressed
• The dialog has an OK button applying the changes
• The dialog has a Cancel button dismissing the changes
• The potentially edited picture can be saved using Save & Save As
• During save, a different image format can be chosen and the file ending is adjusted accordingly
• The application memorizes if the image was edited and shows a star in the window title if that is the case
• The application memorizes if the image was edited and takes this into account when quitting
• The application memorizes if the image was edited and takes this into account when opening a new image
• The application memorizes a list of recently edited files and shows them in the file menu
• The GUI is available in English & German - including tool tips
• The app chooses language automatically based on the user config
• The language may be changed on runtime under View -> Language

DONE:

• A simple QSS style file for a dark theme is provided which colors the app and its dialogues dark
• Therefore, there are 6 sliders in 2 groups - RGB & YUV
• Only one of the 2 groups of sliders is enabled
• Which group of sliders is enabled is determined by 2 radio buttons choosing between RGB and YUV
• Values for R, G, B, & Y are from 0 to 100% and for U & V from -100% to 100%