SVG Image List: what changed
Revision 0 to 1. Removed lines have a minus sign; added lines have a plus sign.
Title: SVG Image List
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| 1 | + | Hi, this is a simple tutorial on how to use SVG Images in our Lazarus applications. | |
| 2 | + | ||
| 3 | + | ## Requirements | |
| 4 | + | ||
| 5 | + | 1\) Install [[BGRABitmap]] | |
| 6 | + | ||
| 7 | + | 2\) Install [[BGRAControls]] | |
| 8 | + | ||
| 9 | + | (Hint: Use online package manager) | |
| 10 | + | ||
| 11 | + | ## Tutorial | |
| 12 | + | ||
| 13 | + | In this tutorial we will add an SVG Icon to a TMainMenu. | |
| 14 | + | ||
| 15 | + | ### Create elements | |
| 16 | + | ||
| 17 | + | 1\) Drop a TMainMenu, add some entries like 'File' and a sub entry 'Open'. | |
| 18 | + | ||
| 19 | + | 2\) Drop a regular TImageList, assign it to the MainMenu1 we previously created. | |
| 20 | + | ||
| 21 | + | 3\) Assign the ImageIndex in the entries, for example in the File \> Open add index 0. | |
| 22 | + | ||
| 23 | + | That is not different as you need to do it anyways with a regular image list, so nothing changes here. The next step shows the SVG stuff. | |
| 24 | + | ||
| 25 | + | ### Create SVG Image List | |
| 26 | + | ||
| 27 | + | 1\) Add a TBGRASVGImageList from BGRA Themes pallete. | |
| 28 | + | ||
| 29 | + | 2\) Double click the SVG Image List component and add some SVG's, just load them from file. | |
| 30 | + | ||
| 31 | + | 3\) Add this code, the glue between our two image lists: | |
| 32 | + | ||
| 33 | + | ``` pascal | |
| 34 | + | procedure TForm1.FormCreate(Sender: TObject); | |
| 35 | + | begin | |
| 36 | + | BGRASVGImageList1.PopulateImageList(ImageList1, [24]); | |
| 37 | + | end; | |
| 38 | + | ``` | |
| 39 | + | ||
| 40 | + | **Done!** | |
| 41 | + | ||
| 42 | + | Now you have SVG Icons in your application, repeat for buttons and any component that supports a regular image list. | |
| 43 | + | ||
| 44 | + | ### Optional parameter | |
| 45 | + | ||
| 46 | + | The second parameter is array of resolutions, 24px is the default on Windows. You can add more like 48px for retina on macOS or High DPI on Windows. | |
| 47 | + | ||
| 48 | + | ``` pascal | |
| 49 | + | BGRASVGImageList1.PopulateImageList(ImageList1, [24, 48]); | |
| 50 | + | ``` | |
| 51 | + | ||
| 52 | + | **Important:** You need to enable 'Scaled' property on the regular image list in order to the extra resolutions work fine. | |
| 53 | + | ||
| 54 | + | Enjoy! | |
| 55 | + | ||
| 56 | + | --- | |
| 57 | + | *From the Free Pascal wiki, page "SVG Image List", as it stood on 2022-08-16 after a change by Skalogryz, out of the wiki's dump of 2024-05-26. Copyright stays with the author who wrote it, according to the old wiki's [[Licensing]] page. If you have concerns about this material, [message the admin](/wiki-contact).* | |
| 58 | + | Category: Graphics | |
| 59 | + | Category: SVG |