Touchscreen Display Lasso Attachment for Stable Object Transformations
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Solution Overview
Problem
The separation of the key handle from the lasso trajectory and target area after box-selection on a touch control screen leads to poor user experience and visual perception in electronic devices.
Innovation Solution
A display control method that determines the key handle on the lasso trajectory based on intersection points with the box selection trajectory, ensuring its attachment and stability during transformations such as zoom, rotation, and window changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the key handle is generated separately from the lasso trajectory after box-selection, then the transformation control function is achieved, but the visual perception and user experience deteriorate due to separation
Solution Approach 1:
The patent merges the key handle with the lasso trajectory by determining the key handle's location on the trajectory itself (using intersection points or proportional distances along the trajectory path). This ensures the key handle remains visually attached to the selected area boundary, improving user perception while maintaining transformation control functionality.
2Adaptability or versatility
If the key handle location is fixed after generation, then the generation process is simple, but the key handle cannot adapt when the target area or window size changes
Solution Approach 1:
The patent implements dynamic key handle positioning by recalculating its location on the lasso trajectory whenever the target area changes, window size changes, or transformation operations occur. The key handle's position is determined by dynamic parameters such as proportional distances along the trajectory or intersection points that adapt to the current state, ensuring continuous visual attachment and functional stability.
3Reliability
If the key handle is determined based on intersection points with box selection trajectory, then the attachment to lasso trajectory is maintained, but the determination process becomes more complex
Solution Approach 1:
The patent performs preliminary determination of the key handle's initial position on the lasso trajectory using intersection points with the box selection trajectory or proportional distance calculations. This initial positioning establishes a reliable attachment point that serves as a foundation for subsequent dynamic adjustments, ensuring the key handle remains properly positioned without requiring complex real-time recalculation for every state change.
Data Source
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AI summary
This application relates to the field of smart terminal technologies, and specifically, to a display control method, an electronic device, and a readable storage medium. The method includes: The electronic device displays a first interface, where the first interface includes a first window of a first application; in response to a first operation of a user on the first interface, displays a first trajectory corresponding to the first operation, where the first trajectory surrounds at least a part of a first target; in response to ending the first operation by the user, converts the first trajectory into a second trajectory, displays the second trajectory, and displays a first control on the second trajectory, where the second trajectory is determined based on an edge of the first target, and the first target is located in the second trajectory; and in response to a second operation performed by the user on the first control on the first interface, simultaneously changes the second trajectory and the first target in the second trajectory. According to the method provided in an embodiment of this application, the first control can be attached to the second trajectory and the first target, which can improve visual perception of a user and help improve user experience.