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add docs
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@ -78,6 +78,7 @@ demos\demo1
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## 文档
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* [LFTK脚本绑定的实现原理 - lua绑定](docs/binding_lua.md)
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* [LFTK控件的布局参数介绍](docs/layout.md)
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## 任务完成情况
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[TODO.md](TODO.md)
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176
docs/layout.md
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176
docs/layout.md
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@ -0,0 +1,176 @@
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# LFTK控件的布局参数
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## 一、为什么需要布局参数
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如果界面上元素是预先知道的,而且窗口的大小也是固定的,通过可视化的工具,以所见即所得的方式,去创建界面是最轻松的方式。但是在下列情况下,使用布局参数却是更好的选择。
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* 窗口的大小可以动态调整的。
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* 需要适应不同大小的屏幕。
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* 界面上的元素是动态的,需要用程序创建界面。
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[LFTK](https://github.com/xianjimli/lftk)提供了简单而又强大的布局参数。
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## 二、控件自身的布局参数
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### 0. 像素
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直接指定控件的x/y/w/h的像素值,这是缺省的方式,也是最缺乏灵活性的方式。
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示例:
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* 在XML界面描述文件中:
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```
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<button x="10" y="5" w="80" h="30" text="ok"/>
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```
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* 在代码中:
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```
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widget_move_resize(btn, 10, 5, 80, 30);
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```
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### 1. 百分比
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* x/w的值如果包含"%",则自动换算成相对其父控件宽度的百分比。
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* y/h的值如果包含"%",则自动换算成相对其父控件高度的百分比。
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示例:
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* 在XML界面描述文件中:
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```
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<button x="10%" y="10" w="50%" h="30" text="ok"/>
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```
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* 在代码中(看起来要麻烦一点):
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```
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widget_set_self_layout_params(btn, "10%", "10", "50%", "30");
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widget_layout(btn);
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```
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> 在代码中设置控件的布局参数,方法类似,后面就不再举例子了。
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### 2. 水平居中
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让控件在水平方向上居中,只需要将x的值设置成"c"或者"center"即可。
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示例:
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```
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<button x="center" y="10" w="50%" h="30" text="ok"/>
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```
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### 3. 垂直居中
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让控件在垂直方向上居中,只需要将y的值设置成"m"或者"middle"即可。
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示例:
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```
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<button x="center" y="middle" w="50%" h="30" text="ok"/>
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```
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### 4. 位于右边
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让控件位于父控件的右侧,只需要将x的值设置成"right"即可。
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示例:
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```
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<button x="right" y="10" w="50%" h="30" text="ok"/>
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```
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如果还想离右侧有一定距离,可以在right后指定距离的像素。
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示例:
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```
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<button x="right:20" y="10" w="50%" h="30" text="ok"/>
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```
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### 5. 位于底部
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让控件位于父控件的底部,只需要将y的值设置成"bottom"即可。
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示例:
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```
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<button x="10" y="bottom" w="50%" h="30" text="ok"/>
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```
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如果还想离底部有一定距离,可以在bottom后指定距离的像素。
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示例:
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```
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<button x="10" y="bottom:20" w="50%" h="30" text="ok"/>
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```
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## 三、子控件的布局参数
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为了方便父控件布局子控件,LFTK提供了下面4个参数:
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* rows 行数
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* cols 列数
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* margin 边距
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* cell_spacing 子控件之间的间距
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在代码中,可以通过下面的函数设置这几个参数:
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```
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ret_t widget_set_children_layout_params(widget_t* widget, uint8_t rows, uint8_t cols, uint8_t margin, uint8_t cell_spacing);
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```
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在XML中,可以通过layout设置这几个参数:
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```
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<group_box x="0" y="140" w="100%" h="90" layout="2 2 10 5">
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<button x="0" y="0" w="0" h="0" text="button"/>
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<button x="0" y="0" w="0" h="0" text="button"/>
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<button x="0" y="0" w="0" h="0" text="button"/>
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<button x="0" y="0" w="0" h="0" text="button"/>
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</group_box>
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```
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下面我们看看,如何调整rows/cols两个参数,来实现不同的布局方式。
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### 0. 缺省
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在没有设置子控件布局参数或者rows/cols都为0时,采用缺省的布局方式,父控件啥事也不做,完全有子控件自己的布局参数决定。
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### 1. hbox
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当rows=1,cols=0时,所有子控件在水平方向排成一行,可以实现其它GUI中hbox的功能。子控件的参数:
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* x 从左到右排列,由布局参数计算而出。
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* y 为margin
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* w 由子控件自己决定。
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* h 为父控件的高度-2*margin
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### 2. vbox
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当cols=1,rows=0时,所有子控件在垂直方向排成一列,可以实现其它GUI中vbox的功能。子控件的参数:
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* x 为margin
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* y 从上到下排列,由布局参数计算而出。
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* w 为父控件的宽度-2*margin
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* h 由子控件自己决定。
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### 3. listbox
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当cols=1,rows=N时,所有子控件在垂直方向排成一列,可以实现其它GUI中listbox的功能。子控件的参数:
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* x 为margin
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* y 从上到下排列,由布局参数计算而出。
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* w 为父控件的宽度-2*margin
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* h 为父控件的高度(减去边距和间距)分成成N等分。
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### 4. grid
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当cols=N,rows=N时,所有子控件放在NxN的网格中,可以实现其它GUI中grid的功能。
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> demos/layouts中有演示各种布局参数的示例,可以用下面的命令运行起来看看:
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```
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./demos/prefix_xml_ui demos/layouts/demo2.xml
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```
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7
docs/optimation.md
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7
docs/optimation.md
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## LFTK中显示优化技术
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### 一、裁剪
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### 二、脏矩形
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### 三、极速模式
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@ -158,7 +158,7 @@ ret_t widget_layout_calc(const widget_layout_t* layout, rect_t* r, wh_t parent_w
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return RET_OK;
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}
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ret_t widget_set_self_layout_params(widget_t* widget, const widget_layout_t* layout) {
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ret_t widget_set_parsed_self_layout_params(widget_t* widget, const widget_layout_t* layout) {
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return_value_if_fail(widget != NULL && layout != NULL, RET_BAD_PARAMS);
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if (widget->layout_params == NULL) {
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widget->layout_params = MEM_ZALLOC(layout_params_t);
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return RET_OK;
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}
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ret_t widget_set_self_layout_params(widget_t* widget, const char* x, const char* y, const char* w, const char* h) {
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widget_layout_t layout;
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return_value_if_fail(widget != NULL && x != NULL && y != NULL && w != NULL && h!= NULL, RET_BAD_PARAMS);
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widget_layout_parse(&layout, x, y, w, h);
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return widget_set_parsed_self_layout_params(widget, &layout);
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}
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ret_t widget_set_children_layout_params(widget_t* widget, uint8_t rows, uint8_t cols,
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uint8_t margin,
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uint8_t cell_spacing) {
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widget_layout_t* widget_layout_parse(widget_layout_t* layout, const char* x, const char* y, const char* w, const char* h);
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children_layout_t* children_layout_parser(children_layout_t* layout, const char* params);
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ret_t widget_set_self_layout_params(widget_t* widget, const widget_layout_t* layout);
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ret_t widget_set_parsed_self_layout_params(widget_t* widget, const widget_layout_t* layout);
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ret_t widget_set_self_layout_params(widget_t* widget, const char* x, const char* y, const char* w, const char* h);
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ret_t widget_set_children_layout_params(widget_t* widget, uint8_t rows, uint8_t cols, uint8_t margin, uint8_t cell_spacing);
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ret_t widget_layout(widget_t* widget);
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}
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if(layout->x_attr != X_ATTR_DEFAULT || layout->y_attr != Y_ATTR_DEFAULT || layout->w_attr == W_ATTR_PIXEL || layout->h_attr == H_ATTR_PIXEL) {
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widget_set_self_layout_params(widget, layout);
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widget_set_parsed_self_layout_params(widget, layout);
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}
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b->widget = widget;
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}
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TEST(Layuout, fill) {
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rect_t r;
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widget_layout_t layout;
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ASSERT_EQ(widget_layout_parse(&layout, "1", "2", "fill", "fill"), &layout);
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ASSERT_EQ(layout.w_attr, W_ATTR_FILL);
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@ -121,23 +120,23 @@ TEST(Layuout, layout_children_null) {
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widget_t* g2 = group_box_create(win, 0, 0, 0, 0);
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widget_t* g3 = group_box_create(win, 0, 0, 0, 0);
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widget_set_self_layout_params(g1, widget_layout_parse(&layout, "1", "2", "3", "4"));
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widget_set_parsed_self_layout_params(g1, widget_layout_parse(&layout, "1", "2", "3", "4"));
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widget_layout(win);
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ASSERT_EQ(g1->x, 1);
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ASSERT_EQ(g1->y, 2);
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ASSERT_EQ(g1->w, 3);
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ASSERT_EQ(g1->h, 4);
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widget_set_self_layout_params(g1, widget_layout_parse(&layout, "0", "0", "10", "4"));
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widget_set_self_layout_params(g2, widget_layout_parse(&layout, "0", "0", "fill", "4"));
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widget_set_self_layout_params(g3, widget_layout_parse(&layout, "100", "0", "3", "4"));
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widget_set_parsed_self_layout_params(g1, widget_layout_parse(&layout, "0", "0", "10", "4"));
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widget_set_parsed_self_layout_params(g2, widget_layout_parse(&layout, "0", "0", "fill", "4"));
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widget_set_parsed_self_layout_params(g3, widget_layout_parse(&layout, "100", "0", "3", "4"));
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widget_layout(win);
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ASSERT_EQ(g2->x, 10);
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ASSERT_EQ(g2->w, 90);
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widget_set_self_layout_params(g1, widget_layout_parse(&layout, "0", "0", "10", "20"));
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widget_set_self_layout_params(g2, widget_layout_parse(&layout, "0", "0", "4", "fill"));
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widget_set_self_layout_params(g3, widget_layout_parse(&layout, "100", "160", "3", "4"));
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widget_set_parsed_self_layout_params(g1, widget_layout_parse(&layout, "0", "0", "10", "20"));
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widget_set_parsed_self_layout_params(g2, widget_layout_parse(&layout, "0", "0", "4", "fill"));
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widget_set_parsed_self_layout_params(g3, widget_layout_parse(&layout, "100", "160", "3", "4"));
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widget_layout(win);
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ASSERT_EQ(g2->y, 20);
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ASSERT_EQ(g2->h, 140);
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widget_t* g3 = group_box_create(win, 0, 0, 0, 0);
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widget_set_children_layout_params(win, 0, 0, 10, 10);
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widget_set_self_layout_params(g1, widget_layout_parse(&layout, "0", "0", "10", "4"));
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widget_set_self_layout_params(g2, widget_layout_parse(&layout, "0", "0", "fill", "4"));
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widget_set_self_layout_params(g3, widget_layout_parse(&layout, "100", "0", "3", "4"));
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widget_set_parsed_self_layout_params(g1, widget_layout_parse(&layout, "0", "0", "10", "4"));
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widget_set_parsed_self_layout_params(g2, widget_layout_parse(&layout, "0", "0", "fill", "4"));
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widget_set_parsed_self_layout_params(g3, widget_layout_parse(&layout, "100", "0", "3", "4"));
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widget_layout(win);
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ASSERT_EQ(g2->x, 20);
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ASSERT_EQ(g2->w, 70);
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widget_set_self_layout_params(g1, widget_layout_parse(&layout, "0", "0", "10", "20"));
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widget_set_self_layout_params(g2, widget_layout_parse(&layout, "0", "0", "4", "fill"));
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widget_set_self_layout_params(g3, widget_layout_parse(&layout, "100", "160", "3", "4"));
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widget_set_parsed_self_layout_params(g1, widget_layout_parse(&layout, "0", "0", "10", "20"));
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widget_set_parsed_self_layout_params(g2, widget_layout_parse(&layout, "0", "0", "4", "fill"));
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widget_set_parsed_self_layout_params(g3, widget_layout_parse(&layout, "100", "160", "3", "4"));
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widget_layout(win);
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ASSERT_EQ(g2->y, 30);
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ASSERT_EQ(g2->h, 120);
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@ -178,9 +177,9 @@ TEST(Layuout, layout_children_10) {
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widget_t* g3 = group_box_create(win, 0, 0, 0, 0);
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widget_set_children_layout_params(win, 1, 0, 10, 5);
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widget_set_self_layout_params(g1, widget_layout_parse(&layout, "0", "0", "20", "4"));
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widget_set_self_layout_params(g2, widget_layout_parse(&layout, "0", "0", "30", "4"));
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widget_set_self_layout_params(g3, widget_layout_parse(&layout, "100", "0", "20%", "4"));
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widget_set_parsed_self_layout_params(g1, widget_layout_parse(&layout, "0", "0", "20", "4"));
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widget_set_parsed_self_layout_params(g2, widget_layout_parse(&layout, "0", "0", "30", "4"));
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widget_set_parsed_self_layout_params(g3, widget_layout_parse(&layout, "100", "0", "20%", "4"));
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widget_layout(win);
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ASSERT_EQ(g1->x, 10);
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ASSERT_EQ(g1->y, 10);
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@ -208,9 +207,9 @@ TEST(Layuout, layout_children_01) {
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widget_t* g3 = group_box_create(win, 0, 0, 0, 0);
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widget_set_children_layout_params(win, 0, 1, 10, 10);
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widget_set_self_layout_params(g1, widget_layout_parse(&layout, "0", "0", "20", "20"));
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widget_set_self_layout_params(g2, widget_layout_parse(&layout, "0", "0", "30", "30"));
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widget_set_self_layout_params(g3, widget_layout_parse(&layout, "100", "100", "20%", "20%"));
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widget_set_parsed_self_layout_params(g1, widget_layout_parse(&layout, "0", "0", "20", "20"));
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widget_set_parsed_self_layout_params(g2, widget_layout_parse(&layout, "0", "0", "30", "30"));
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widget_set_parsed_self_layout_params(g3, widget_layout_parse(&layout, "100", "100", "20%", "20%"));
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widget_layout(win);
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ASSERT_EQ(g1->x, 10);
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ASSERT_EQ(g1->y, 10);
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@ -236,7 +235,7 @@ TEST(Layuout, layout_children_11) {
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widget_t* g1 = group_box_create(win, 0, 0, 0, 0);
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widget_set_children_layout_params(win, 1, 1, 10, 5);
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widget_set_self_layout_params(g1, widget_layout_parse(&layout, "0", "0", "20%", "20%"));
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widget_set_parsed_self_layout_params(g1, widget_layout_parse(&layout, "0", "0", "20%", "20%"));
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widget_layout(win);
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ASSERT_EQ(g1->x, 10);
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ASSERT_EQ(g1->y, 10);
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@ -247,7 +246,6 @@ TEST(Layuout, layout_children_11) {
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}
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TEST(Layuout, layout_children_14) {
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widget_layout_t layout;
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widget_t* win = group_box_create(NULL, 0, 0, 200, 200);
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widget_t* g1 = group_box_create(win, 0, 0, 0, 0);
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widget_t* g2 = group_box_create(win, 0, 0, 0, 0);
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@ -280,7 +278,6 @@ TEST(Layuout, layout_children_14) {
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}
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TEST(Layuout, layout_children_41) {
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widget_layout_t layout;
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widget_t* win = group_box_create(NULL, 0, 0, 200, 200);
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widget_t* g1 = group_box_create(win, 0, 0, 0, 0);
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widget_t* g2 = group_box_create(win, 0, 0, 0, 0);
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@ -313,7 +310,6 @@ TEST(Layuout, layout_children_41) {
|
||||
}
|
||||
|
||||
TEST(Layuout, layout_children_22) {
|
||||
widget_layout_t layout;
|
||||
widget_t* win = group_box_create(NULL, 0, 0, 200, 200);
|
||||
widget_t* g1 = group_box_create(win, 0, 0, 0, 0);
|
||||
widget_t* g2 = group_box_create(win, 0, 0, 0, 0);
|
||||
|
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Reference in New Issue
Block a user