CoatiSoftware/Sourcetrail

Hold space to pan graph by dragging from anywhere

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#713 创建于 2019年7月29日

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 (0 评论) (1 反应) (0 负责人)C++ (14,130 star) (1,310 fork)batch import
featuregood first issue

描述

like in Photoshop

Currently you can only pan the whole graph when clicking and dragging into the background area.

With this change, holding down space should allow to click anywhere to drag the whole graph, even when the mouse is currently over a node or edge.

Implementation suggestion:

  • QtGraphNode and QtGraphEdge need to ignore the mouse drag event when space is held down
  • QtGraphicsView needs to handle the drag when space is held down.

贡献者指南

技术栈
ccpp
领域
desktop
议题类型
feature
难度面向新贡献者的预计实现难度，1 表示很小改动，5 表示专家级工作。
3
预计时间有经验贡献者完成调查、实现、测试并准备 pull request 的粗略时间范围。
half day
活动状态议题当前的可参与程度：新鲜、活跃、陈旧、阻塞或等待维护者输入。
stale
清晰度议题是否清楚说明期望改动、验收标准和下一步。
mostly clear
前置要求
C++Qt frameworkunderstanding of graphics view
新手友好度1-100 的估计分数，表示该议题对首次贡献者的友好程度。
40
研究方向
The issue suggests modifying mouse event handling in QtGraphNode and QtGraphEdge to ignore drag events when space is held, and QtGraphicsView to handle the panning. Look at the Sourcetrail source code for classes QtGraphNode, QtGraphEdge, and QtGraphicsView to understand the current event handling. Check if there are any existing key event overrides or similar implementations in the codebase.