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Improve surveillance grid dimensions calculation method

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This commit is contained in:
Benjamin Renard 2022-05-02 15:20:26 +02:00
parent 24fc195ff5
commit ff5b6b8101
1 changed files with 16 additions and 6 deletions
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22
app/src/main/java/it/danieleverducci/ojo/ui/SurveillanceFragment.java
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@ -27,6 +27,8 @@ import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import javafx.util.Pair;
import it.danieleverducci.ojo.R;
import it.danieleverducci.ojo.Settings;
import it.danieleverducci.ojo.databinding.FragmentSurveillanceBinding;
@ -153,14 +155,14 @@ public class SurveillanceFragment extends Fragment {
Settings settings = Settings.fromDisk(getContext());
List<Camera> cc = settings.getCameras();
int elemsPerSide = calcGridSideElements(cc.size());
Pair<Integer, Integer> gridSize = calcGridDimensionsBasedOnNumberOfElements(cc.size());
int camIdx = 0;
for (int r = 0; r < elemsPerSide; r++) {
for (int r = 0; r < gridSize[0]; r++) {
// Create row and add to row container
LinearLayout row = new LinearLayout(getContext());
binding.gridRowContainer.addView(row, rowLayoutParams);
// Add camera viewers to the row
for (int c = 0; c < elemsPerSide; c++) {
for (int c = 0; c < gridSize[1]; c++) {
if ( camIdx < cc.size() ) {
Camera cam = cc.get(camIdx);
CameraView cv = addCameraView(cam, row);
@ -239,13 +241,21 @@ public class SurveillanceFragment extends Fragment {
}
/**
* Returns the number of elements per side needed to create a grid that can contain the provided elements number.
* Returns the dimensions of the grid based on the number of elements.
* Es: to display 3 elements is needed a 4-element grid, with 2 elements per side (a 2x2 grid)
* Es: to display 6 elements is needed a 9-element grid, with 3 elements per side (a 2x3 grid)
* Es: to display 7 elements is needed a 9-element grid, with 3 elements per side (a 3x3 grid)
* @param elements
*/
private int calcGridSideElements(int elements) {
return (int)(Math.ceil(Math.sqrt(elements)));
private Pair<Integer, Integer> calcGridDimensionsBasedOnNumberOfElements(int elements) {
int rows = 1;
int cols = 1;
while (rows * cols < elements) {
cols += 1;
if (rows * cols >= elements) break;
rows += 1;
}
return new Pair<Integer, Integer>(rows, cols);
}
/**