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85	85	* Smart Cities
86	86	* Smart Factory
87	87
88		-= 2.  Getting Start with Hello World =
	88	+= 2.  Getting Started with Hello World =
89	89
90	90	== 2.1  About this demo ==
91	91
92		-In this Getting Start Example, we will show how to design a simple Display UI and upload it to LTS5. This UI has  a button , when user click the button. The Web UI will jump to a new page.
	92	+In this Getting Started Example, we will show how to design a simple Display UI and upload it to LTS5. This UI has  a button , when user click the button. The Web UI will jump to a new page.
93	93
94	94	== 2.2  Install Software Running Environment ==
95	95
...	...	@@ -101,7 +101,7 @@
101	101
102	102	Next, you need to install the ESP-IDF extension within VSCode. The detailed operation steps are illustrated in image 1.
103	103
104		-[[image:1727229396732-319.png]]
	104	+[[image:image-20240928110211-5.png||height="508" width="866"]]
105	105
106	106	image 1 ESP-IDF extension install
107	107
...	...	@@ -118,9 +118,9 @@
118	118	After launching and logging in to this software, create a project as shown in the following image 2. The version of LVGL is 8.3.11.
119	119
120	120
121		-[[image:1727233636007-933.png]]
	121	+[[image:image-20240928103357-2.png||height="680" width="708"]]
122	122
123		- image 2 create a SquareLine project
	123	+ image 2 create a SquareLine project
124	124
125	125	Next, we need to make some settings for this project. By clicking in the specified order on image 3, we can see the page as shown in image 4.
126	126
...	...	@@ -128,42 +128,85 @@
128	128
129	129	image 3 project settings
130	130
131		-[[image:1727229618724-758.png]]
	131	+[[image:image-20240928105309-4.png||height="526" width="556"]]
132	132
133	133	image 4 modify project settings
134	134
135		-Now we can start to use this software. The steps for creating this UI are shown in image 5-10.
	135	+Now we can start to use this software. Here are some usage information for this software.
136	136
137		-[[image:1727229653254-680.png]]
	137	+**1.add widget**
138	138
139		- image 5 create a UI(1)
	139	+To add a widget, you should click a widget you want to add at the area entitled “Widgets”. In image , demonstrate a add process of label, button, and image 5.
140	140
141		-[[image:1727231038705-173.png]]
	141	+[[image:image-20240928111412-6.png||height="526" width="864"]]
142	142
143		- image 6 create a UI(2)
	143	+ image 5 add widgets
144	144
145		-[[image:1727229682537-381.png]]
	145	+**2.modify widget**
146	146
147		- image 7 create a UI(3)
	147	+The area for modifying widgets is called "Inspector". There are four parts in the "Inspector" tab. We use three of them more frequently, excluding "COMPONENT". The second part is aimed at adjusting the layout, size, position, alignment, flags, and states, etc. of widgets. The name of the second part indicates the type of widget it is representing, and in image 6, it is "BUTTON".
148	148
149		-We repeat the steps of screen1 in screen2. Then we get screen2 as shown in image 8.
	149	+[[image:1727485118799-984.png]]
150	150
151		-[[image:1727229715361-392.png]]
	151	+ image 6 the button widget's "Inspector" tab
152	152
153		- image 8 create a UI(4)
	153	+Second part: "Layout" means a auto position-management for widgets contained in the parent widget. "Transform" includes size, position and align modification.
154	154
155		-Finally, we add click event for screen change to button1 in screen1(shown in image 9) and button2 in screen2.
	155	+[[image:1727485251053-655.png]]
156	156
157		-[[image:1727229740592-843.png]]
	157	+image 7 the button widget's "BUTTON" tab
158	158
159		- image 9 create a UI(5)
	159	+Third part: It is an area of style setting.
160	160
161		-The event settings of button1 are as image 10 shown. The event adding operation of button2 is similar to button1.
	161	+Fourth part: It is an area for adding events. In image 8, it is adding a click event to a button. If the button is clicked after the click event is added as shown in image 8, the current screen will fade into another specified screen, and the switching process will last 500ms.
162	162
163		-[[image:1727229760857-521.png]]
	163	+[[image:1727485480434-713.png||height="395" width="290"]]
164	164
165		- image 10 create a UI(6)
	165	+ image 8 add event for button
166	166
	167	+**3.change label widget content**
	168	+
	169	+Modify the content in text as shown in image 9, the text content of label widget will be changed accordingly.
	170	+
	171	+[[image:image-20240928090825-1.png||height="327" width="391"]]
	172	+
	173	+ image 9 modify text content of label widget
	174	+
	175	+**4.Add image into project**
	176	+
	177	+To use the image widget, you should first add an image to your project. The image format must be PNG, and its resolution should not exceed 800x480 pixels. There are two ways to add an image file. One way is to move your image into the folder "…/squareline project/assets/", as shown in image 10. The other way is to click the "ADD FILE INTO ASSETS" button, then select an image from your computer to import. After adding, you can see the image in the "assets" area in SquareLine Studio, as demonstrated in image 11.
	178	+
	179	+[[image:image-20240928113424-9.png||height="355" width="505"]]
	180	+
	181	+ image 10 add image file into SquareLine Studio project
	182	+
	183	+[[image:image-20240928114139-10.png||height="559" width="810"]]
	184	+
	185	+ image 11 use image widget in SquareLine Studio
	186	+
	187	+**5.The relationship between widgets**
	188	+
	189	+There are two common relationships between widgets: one is parallel, the other is parent-child. The parallel relationship means that widgets' relative position is based on a collective object of reference. In parent-child relationship, the parts of the child object that are outside the boundaries of the parent object are not visible by default. Therefore, we need to adjust the position of the child object so that it falls within the range of the parent object, allowing it to be seen as illustrated in image 13.
	190	+
	191	+[[image:1727486567182-334.png||height="318" width="278"]]
	192	+
	193	+image 12 move label1 to make label1 widget be a child of button1 widget(1)
	194	+
	195	+[[image:image-20240928112001-8.png||height="431" width="796"]]
	196	+
	197	+ image 13 move label1 to make label1 widget be a child of button1 widget(2)
	198	+
	199	+**6.Preview the final effect**
	200	+
	201	+An advantage of this kind of software is that you can edit the UI with quick previews. In other words, it provides a way of combining graphical programming with simulation immediately.
	202	+
	203	+[[image:1727487368023-281.png]]
	204	+
	205	+ image 14 click on the triangle icon to start or end the simulation
	206	+
	207	+For more detailed usage, please visit the official link: [[SquareLine Studio 1.4.2 Documentation ~| SquareLine Studio>>url:https://docs.squareline.io/docs/squareline/]].
	208	+
	209	+
167	167	== 2.4 Integrate UI Code to ESP-IDF Project ==
168	168
169	169	To achieve the integrating, we first need to export the UI code, then make some modifications, and finally relocate the UI code to a specific position within the project.
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170	170
171	171	[[image:1727229798126-306.png]]
172	172
173		- image 11 export UI file
	216	+ image 15 export UI file
174	174
175		-[[image:1727229821582-258.png]]
	218	+[[image:1727229821582-258.png||height="333" width="662"]]
176	176
177		- image 12 exported UI file
	220	+ image 16 exported UI file
178	178
179		-Create a empty directory entitled ‘ui’ in path “basic_prj/app_components/ui/”, and then copy all UI code exported to this directory.
	222	+Create a empty directory entitled "ui" in path "basic_prj/app_components/ui/", and then copy all UI code exported to this directory.
180	180
181		-[[image:1727229845835-509.png]]
	224	+[[image:image-20240928144830-11.png]]
182	182
183		- image 13 open CMakeLists.txt
	226	+ image 17 open CMakeLists.txt
184	184
185		-[[image:1727229892636-154.png]]
	228	+[[image:1727229892636-154.png||height="521" width="407"]]
186	186
187		- image 14 modify CMakeLists.txt
	230	+ image 18 modify CMakeLists.txt
188	188
189	189	The last step of integrating is adding two lines of code in main.c file.
190	190
191	191	[[image:1727229926561-300.png]]
192	192
193		- image 15 add “ui.h”
	236	+ image 19 add "ui.h"
194	194
195	195	[[image:1727229955611-607.png]]
196	196
197		- image 16 add “ui_init()”
	240	+ image 20 add "ui_init()"
198	198
199		-== 2.5 Test Result ==
	242	+== 2.5 Brief introduction of hello world project ==
200	200
	244	+The project consists of two screens. The first screen displays the company's logo, the project name, and a button to navigate to the next screen. The second screen presents some information about this HMI screen product through an image and includes a button to return to the previous screen.
	245	+
	246	+== 2.6 Test Result ==
	247	+
201	201	By pressing the button lying bottom right, the screen can switch to another as expected. This indicates that the UI file has been successfully integrated into the project and is now effective.
202	202
203		-[[image:1727229990795-405.png]]
	250	+[[image:1727488067077-684.png||height="402" width="574"]]
204	204
205		- image 17 screen1
	252	+ image 21 screen1
206	206
207		-[[image:1727230012478-930.png]]
	254	+[[image:1727488157579-949.png||height="397" width="572"]]
208	208
209		- image 18 screen2
	256	+ image 22 screen2
210	210
211	211	= 3. Example Project 1: LoRa Central Display =
212	212

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