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Found 2 results

  1. lynkfs

    Responsive Design

    Responsive design in essence consists of 2 measures : style all components as best as possible depending on screen size (larger buttons on mobile, proportional font sizing etc) tweak the layout of forms so that it works best on any given screen size 1) Screen size dependent styling can be done in code and/or is done as other frameworks do by including media queries in the stylesheet. Media queries basically activate different parts of a stylesheet depending on the actual screen size. Smart doesn't implement this in its shipped stylesheets, but there is no reason it can't be done. Just a bit of work. 2) Tweaking the form layout in Smart is possible by doing it in code depending on screensize and orientation - a bit of a pain really using the Layout Manager using some css grid framework or ui kit. For website development I've used the Frow framework quite a bit, but there are many others. using anchors and the CSS grid (which is basically the topic of this post) The new anchors are fantastic, but don't really help in responsive design. Browser window resizing doesn't proportionally resize anchored components. That is unless they are dimensioned depending on screen size beforehand : var W3Panel0 : TW3Panel := TW3Panel.Create(self); W3Panel0.Left := trunc(browserapi.window.innerWidth*0.05); W3Panel0.Top := trunc(browserapi.window.innerHeight*0.05); W3Panel0.Width := trunc(browserapi.window.innerWidth*0.9); W3Panel0.Height := trunc(browserapi.window.innerHeight*0.10); W3Panel0.Anchors := [akLeft, akRight, akTop]; // var W3Panel1 : TW3Panel := TW3Panel.Create(self); W3Panel1.Left := trunc(browserapi.window.innerWidth*0.05); W3Panel1.Top := trunc(browserapi.window.innerHeight*0.15); W3Panel1.Width := trunc(browserapi.window.innerWidth*0.9); W3Panel1.Height := trunc(browserapi.window.innerHeight*0.70); W3Panel1.Anchors := [akLeft, akRight, akTop, akBottom]; W3Panel1.NativeScrolling := true; // var W3Panel2 : TW3Panel := TW3Panel.Create(self); W3Panel2.Left := trunc(browserapi.window.innerWidth*0.05); W3Panel2.Top := trunc(browserapi.window.innerHeight*0.85); W3Panel2.Width := trunc(browserapi.window.innerWidth*0.9); W3Panel2.Height := trunc(browserapi.window.innerHeight*0.10); W3Panel2.Anchors := [akLeft, akRight, akBottom]; As an example the code above produces a header (always on top), a footer (always on the bottom) and a scrollable body inbetween with some proportional margins. The good thing is it works well on all screen sizes, and even on orientation changes, without having to code anything else. Instead of using a grid system with media queries, or doing it in code, it is also possible to use the built-in css grid to get a responsive design. Much easier, see article. If I just plonk the css and html of the first example in that article into the structure above, this is how it ends up looking : Demo Resize browser window to see this in effect (or see it in the responsinator) Not the end-all of all possible responsive design options, but it may fit the bill sometimes. Note : the built-in chrome browser doesn't understand the css grid, so execute from file or server.
  2. Hello again. Is there any way to show a grid with the resizeable columns? I have tried TW3Grid adding columns and assigning their sizes. In resize I have assigned a percentage to each column (colCode = 5, colName = 80, colState = 15, for example) and I change the width to each of the columns: Grid1.Columns [n] .Width: = Grid.ClientWidth * colCode div 100, etc. The new columns are displayed correctly but those that already exist do not (it seems that the rows are simple concatenations of text). I do not know if it can be done with TW3CustomDBgrid, but I have not found examples. It is also important that they respond to the onClick event (if it can be per cell better than per row, if possible). Maybe it is possible to use listview with several columns?
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