e5eb91cd3f
None of the styles Delphi ships is meant for a phone - grey gradients, sharp corners, thick frames, all from the desktop era. And the day showed that anything rendered through a style template may not exist in the style that is actually loaded: the list row template, the search prompt and the detail row each vanished in turn. So the buttons are rectangles we draw: slate at rest, cyan for the one action that matters, rounded, no gradient, with a press feedback a TRectangle does not have on its own - without it you cannot tell whether the tap landed. The form's own fill carries the background, the list drops its frame, labels take the palette. A style stays loaded underneath, as a base only: edits, list and memo are native controls we are not going to rewrite, and with no style at all they would render light. Palette lives in PMA.Theme, the same slate and cyan as the desktop app. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
177 lines
6.0 KiB
ObjectPascal
177 lines
6.0 KiB
ObjectPascal
unit PMA.Theme;
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{
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Palette et controles peints a la main.
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POURQUOI PAS UN STYLE : aucun des styles livres avec Delphi n'est pense pour
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un mobile - degrades gris, angles vifs, cadres epais, tous datent de
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l'epoque bureau. Et la journee a montre que tout ce qui passe par un gabarit
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de style peut ne pas exister dans le style charge : le gabarit de ligne de
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liste, l'invite de recherche, la ligne de detail ont disparu tour a tour.
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Un style RESTE charge malgre tout, comme socle : les champs de saisie, la
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liste et le memo sont des controles natifs qu'on ne va pas reecrire, et sans
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style ils s'afficheraient en clair. Tout le reste - boutons, surfaces,
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couleurs - est peint ici, ou rien ne peut disparaitre.
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Le style vient de Dark.style, livre avec Delphi, recopie dans le depot pour
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que la compilation ne depende pas d'un chemin d'installation.
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}
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interface
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uses
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System.UITypes, System.Classes, FMX.Types, FMX.Objects, FMX.StdCtrls;
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const
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// Ardoise et cyan, la palette du poste Windows.
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COL_BG = TAlphaColor($FF0F172A); // fond general
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COL_SURFACE = TAlphaColor($FF1E293B); // blocs poses dessus
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COL_RAISED = TAlphaColor($FF334155); // bouton au repos
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COL_TEXT = TAlphaColor($FFE2E8F0);
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COL_MUTED = TAlphaColor($FF94A3B8);
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COL_ACCENT = TAlphaColor($FF22D3EE);
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COL_ON_ACC = TAlphaColor($FF042F3B); // texte sur fond accentue
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/// A appeler une fois, avant la creation de la forme.
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procedure ApplyDarkTheme;
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/// Bouton plat. APrimary le remplit de cyan ; sinon il reste sobre.
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/// Renvoie un TRectangle et non un TButton : c'est justement pour ne plus
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/// dependre du gabarit qu'un TButton irait chercher dans le style.
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function FlatButton(AParent: TFmxObject; const AText: string;
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AOnClick: TNotifyEvent; APrimary: Boolean = False): TRectangle;
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/// Le libelle est un enfant du bouton, retenu par TagObject.
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procedure SetButtonText(AButton: TRectangle; const AText: string);
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procedure SetButtonEnabled(AButton: TRectangle; AEnabled: Boolean);
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/// Bloc de fond, coins arrondis.
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function Surface(AParent: TFmxObject): TRectangle;
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/// Met un libelle a la palette. AMuted pour les intitules discrets.
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procedure Tint(ALabel: TLabel; ASize: Single; AMuted: Boolean = False);
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implementation
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uses
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System.SysUtils, System.Types, FMX.Styles, FMX.Graphics, FMX.Controls;
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{$R 'theme\theme.res' 'theme\theme.rc'}
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procedure ApplyDarkTheme;
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var
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LStyle: TFmxObject;
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begin
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try
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// La lecture appartient a TStyleStreaming, l'application a TStyleManager.
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LStyle := TStyleStreaming.LoadFromResource(HInstance, 'PMDARKSTYLE', RT_RCDATA);
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if LStyle <> nil then
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TStyleManager.SetStyle(LStyle);
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except
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// Rien : l'apparence par defaut reste utilisable.
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end;
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end;
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type
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/// Retient l'etat au repos pour le restaurer apres l'appui. Un TRectangle
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/// n'a pas d'etat « enfonce » : sans retour visuel, on ne sait pas si le
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/// doigt a porte.
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TPressFeedback = class(TComponent)
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public
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Rest: TAlphaColor;
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procedure Down(Sender: TObject; Button: TMouseButton; Shift: TShiftState;
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X, Y: Single);
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procedure Up(Sender: TObject; Button: TMouseButton; Shift: TShiftState;
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X, Y: Single);
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procedure Leave(Sender: TObject);
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end;
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procedure TPressFeedback.Down(Sender: TObject; Button: TMouseButton;
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Shift: TShiftState; X, Y: Single);
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begin
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if Sender is TRectangle then TRectangle(Sender).Opacity := 0.62;
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end;
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procedure TPressFeedback.Up(Sender: TObject; Button: TMouseButton;
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Shift: TShiftState; X, Y: Single);
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begin
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if Sender is TRectangle then TRectangle(Sender).Opacity := 1;
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end;
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procedure TPressFeedback.Leave(Sender: TObject);
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begin
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if Sender is TRectangle then TRectangle(Sender).Opacity := 1;
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end;
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function Surface(AParent: TFmxObject): TRectangle;
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begin
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Result := TRectangle.Create(AParent);
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Result.Parent := AParent;
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Result.Fill.Color := COL_SURFACE;
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Result.Stroke.Kind := TBrushKind.None;
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Result.XRadius := 12;
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Result.YRadius := 12;
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end;
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function FlatButton(AParent: TFmxObject; const AText: string;
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AOnClick: TNotifyEvent; APrimary: Boolean): TRectangle;
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var
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LCaption: TLabel;
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LFeedback: TPressFeedback;
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begin
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Result := TRectangle.Create(AParent);
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Result.Parent := AParent;
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Result.Stroke.Kind := TBrushKind.None;
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Result.XRadius := 10;
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Result.YRadius := 10;
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Result.Cursor := crHandPoint;
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if APrimary then Result.Fill.Color := COL_ACCENT
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else Result.Fill.Color := COL_RAISED;
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Result.OnClick := AOnClick;
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LCaption := TLabel.Create(Result);
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LCaption.Parent := Result;
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LCaption.Align := TAlignLayout.Client;
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LCaption.HitTest := False; // le clic doit atteindre le rectangle
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LCaption.Text := AText;
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LCaption.TextSettings.HorzAlign := TTextAlign.Center;
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LCaption.TextSettings.VertAlign := TTextAlign.Center;
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LCaption.StyledSettings := []; // on gouverne police ET couleur
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LCaption.TextSettings.Font.Size := 15;
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if APrimary then LCaption.TextSettings.FontColor := COL_ON_ACC
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else LCaption.TextSettings.FontColor := COL_TEXT;
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Result.TagObject := LCaption;
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// Le retour d'appui appartient au bouton : il vit et meurt avec lui.
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LFeedback := TPressFeedback.Create(Result);
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LFeedback.Rest := Result.Fill.Color;
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Result.OnMouseDown := LFeedback.Down;
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Result.OnMouseUp := LFeedback.Up;
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Result.OnMouseLeave := LFeedback.Leave;
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end;
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procedure SetButtonText(AButton: TRectangle; const AText: string);
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begin
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if (AButton <> nil) and (AButton.TagObject is TLabel) then
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TLabel(AButton.TagObject).Text := AText;
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end;
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procedure SetButtonEnabled(AButton: TRectangle; AEnabled: Boolean);
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begin
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if AButton = nil then Exit;
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AButton.Enabled := AEnabled;
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// Enabled seul ne se voit pas sur une forme peinte : sans ce grise, un
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// bouton inactif invite a insister.
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if AEnabled then AButton.Opacity := 1 else AButton.Opacity := 0.4;
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end;
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procedure Tint(ALabel: TLabel; ASize: Single; AMuted: Boolean);
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begin
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ALabel.StyledSettings := [];
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ALabel.TextSettings.Font.Size := ASize;
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if AMuted then ALabel.TextSettings.FontColor := COL_MUTED
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else ALabel.TextSettings.FontColor := COL_TEXT;
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end;
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end.
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