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@ -28,12 +28,12 @@ The API in this regard remained the same but some new functions were added:
- `lv_img_set_pivot`: set the pivot point of rotation - `lv_img_set_pivot`: set the pivot point of rotation
The new drawing engine brought new drawing features too. They are highlighted in "style" section. The new drawing engine brought new drawing features too. They are highlighted in the "style" section.
### New style system ### New style system
A old style system is replaced with new more flexible and lightweighted one. The old style system is replaced with a new more flexible and lightweighted one.
It uses an approach similar to CSS: support cascading styles, inheriting properties and local style properties per object. It uses an approach similar to CSS: support cascading styles, inheriting properties and local style properties per object.
As part of this updates a lot of objects were reworked and the APIs have been changed. As part of these updates, a lot of objects were reworked and the APIs have been changed.
- more shadows options: *offset* and *spread* - more shadows options: *offset* and *spread*
- gradient stop position to shift the gradient area and horizontal gradient - gradient stop position to shift the gradient area and horizontal gradient
@ -43,7 +43,7 @@ As part of this updates a lot of objects were reworked and the APIs have been ch
- dashed vertical and horizontal lines (*dash gap*, *dash_width*) - dashed vertical and horizontal lines (*dash gap*, *dash_width*)
- *outline*: a border-like part drawn out of the background. Can have spacing to the background. - *outline*: a border-like part drawn out of the background. Can have spacing to the background.
- *pattern*: display and image in the middle of the background or repeat it - *pattern*: display and image in the middle of the background or repeat it
- *value* display a text which is stored in the style. Can be used e.g. as a lighweighted text on buttons too. - *value* display a text which is stored in the style. It can be used e.g. as a lighweighted text on buttons too.
- *margin*: similar to *padding* but used to keep space outside of the object - *margin*: similar to *padding* but used to keep space outside of the object
Read the [Style](https://docs.littlevgl.com/v7/en/html/overview/style.html) section of the documentation to learn how the new styles system works. Read the [Style](https://docs.littlevgl.com/v7/en/html/overview/style.html) section of the documentation to learn how the new styles system works.
@ -77,7 +77,7 @@ The following object types are renamed:
- btn: doesn't store styles for each state because it's done naturally in the new style system. - btn: doesn't store styles for each state because it's done naturally in the new style system.
- calendar: highlight the pressed datum. The used styles are changed: use LV_CALENDAR_PART_DATE normal for normal dates, checked for highlighted, focused for today, pressed for the being pressed. (checked+pressed, focused+pressed also work) - calendar: highlight the pressed datum. The used styles are changed: use LV_CALENDAR_PART_DATE normal for normal dates, checked for highlighted, focused for today, pressed for the being pressed. (checked+pressed, focused+pressed also work)
- chart: only has LINE and COLUMN types because with new styles all the others can be described. LV_CHART_PART_SERIES sets the style of the series. bg_opa > 0 draws an area in LINE mode. LV_CHART_PART_SERIES_BG also added to set a different style for the series area. Padding in LV_CHART_PART_BG makes the series area smaller, and it ensures space for axis labels/numbers. - chart: only has LINE and COLUMN types because with new styles all the others can be described. LV_CHART_PART_SERIES sets the style of the series. bg_opa > 0 draws an area in LINE mode. LV_CHART_PART_SERIES_BG also added to set a different style for the series area. Padding in LV_CHART_PART_BG makes the series area smaller, and it ensures space for axis labels/numbers.
- linemeter, gauge: can have background if the related style properties are set. Padding makes the scale/lines smaller. scale_border_width and scale_end_border_width allows to draw an arc on the outer part of the scale lines. - linemeter, gauge: can have background if the related style properties are set. Padding makes the scale/lines smaller. scale_border_width and scale_end_border_width allow to draw an arc on the outer part of the scale lines.
- gauge: `lv_gauge_set_needle_img` allows use image as needle - gauge: `lv_gauge_set_needle_img` allows use image as needle
- canvas: allow drawing to true color alpha and alpha only canvas, add `lv_canvas_blur_hor/ver` and rename `lv_canvas_rotate` to `lv_canvas_transform` - canvas: allow drawing to true color alpha and alpha only canvas, add `lv_canvas_blur_hor/ver` and rename `lv_canvas_rotate` to `lv_canvas_transform`
- textarea: If available in the font use bullet (`U+2022`) character in text area password - textarea: If available in the font use bullet (`U+2022`) character in text area password
@ -86,25 +86,24 @@ The following object types are renamed:
- `lv_objmask`: masks can be added to it. The children will be masked accordingly. - `lv_objmask`: masks can be added to it. The children will be masked accordingly.
### Others ### Others
- Change the built in fonts to [Montserrat](https://fonts.google.com/specimen/Montserrat) and add built in fonts from 12 px to 48 px for every 2nd size. - Change the built-in fonts to [Montserrat](https://fonts.google.com/specimen/Montserrat) and add built-in fonts from 12 px to 48 px for every 2nd size.
- Add example CJK and Arabic/Persian/Hebrew built-in font - Add example CJK and Arabic/Persian/Hebrew built-in font
- Add ° and "bullet" to the builtin fonts - Add ° and "bullet" to the built-in fonts
- Add Arabic/Persian script support: change the character according to its position in the text. - Add Arabic/Persian script support: change the character according to its position in the text.
- Add `playback_time` to animations. - Add `playback_time` to animations.
- Add `repeat_count` to animations instead of the current "repeat forever". - Add `repeat_count` to animations instead of the current "repeat forever".
- Replace `LV_LAYOUT_PRETTY` with `LV_LAYOUT_PRETTY_TOP/MID/BOTTOM` - Replace `LV_LAYOUT_PRETTY` with `LV_LAYOUT_PRETTY_TOP/MID/BOTTOM`
### Demos ### Demos
- [lv_examples](https://github.com/littlevgl/lv_examples) were reworked and new examples and demos were added - [lv_examples](https://github.com/littlevgl/lv_examples) was reworked and new examples and demos were added
### New release policy ### New release policy
- Maintain this Changelog for every release - Maintain this Changelog for every release
- Save old major version in new branches. E.g. `release/v6` - Save old major version in new branches. E.g. `release/v6`
- Merge new features and fixes directly into `master` and release a path or minor releases every 2 weeks. - Merge new features and fixes directly into `master` and release a patch or minor releases every 2 weeks.
### Migrating from v6 to v7 ### Migrating from v6 to v7
- First and foremost, create a new `lv_conf.h` based on `lv_conf_templ.h`. - First and foremost, create a new `lv_conf.h` based on `lv_conf_templ.h`.
- To try the new version it suggested to use a simulator project and see the examples. - To try the new version it suggested using a simulator project and see the examples.
- If you have a running project, the most difficult part of the migration is updating to the new style system. Unfortunately, there is no better way than manually updating to the new format. - If you have a running project, the most difficult part of the migration is updating to the new style system. Unfortunately, there is no better way than manually updating to the new format.
- The other parts are mainly minor renames and refactoring as described above. - The other parts are mainly minor renames and refactoring as described above.